Skip to main content Module cost Copy item path Source cost_add_mana Add mana to pool as a cost. Mirrors Java’s CostAddMana. cost_adjustment Cost adjustment logic for spells and abilities. cost_behold Behold (reveal from hand or battlefield) as a cost. Mirrors Java’s CostBehold. cost_behold_exile Behold+Exile parity file for Java CostBeholdExile. cost_blight Blight as a cost — put -1/-1 counters on creatures you control.
Mirrors Java’s CostBlight which extends CostPutCounter. cost_choose_color Choose color(s) as a cost. Mirrors Java’s CostChooseColor. cost_choose_creature_type Choose a creature type as a cost. Mirrors Java’s CostChooseCreatureType. cost_collect_evidence Collect evidence as a cost. Mirrors Java’s CostCollectEvidence. cost_damage Deal damage to self as a cost. Mirrors Java’s CostDamage. cost_discard Discard cards as a cost. Mirrors Java’s CostDiscard. cost_draw Draw cards as a cost. Mirrors Java’s CostDraw. cost_enlist Enlist a creature as a cost. Mirrors Java’s CostEnlist. cost_exert Exert permanents as a cost. Mirrors Java’s CostExert. cost_exile Exile cards as a cost. Mirrors Java’s CostExile. cost_exile_ctrl_or_grave Exile from controlled battlefield or graveyard as a combined cost.
Used by Craft abilities. No direct Java CostExileCtrlOrGrave class — this is
a Rust-side variant that combines CostExile battlefield + graveyard sources. cost_exile_from_stack Exile spells from the stack as a cost. Mirrors Java’s CostExileFromStack. cost_exiled_move_to_grave Move exiled cards to graveyard as a cost. Mirrors Java’s CostExiledMoveToGrave. cost_flip_coin Flip coin(s) as a cost. Mirrors Java’s CostFlipCoin. cost_forage Forage as a cost. Mirrors Java’s CostForage. cost_gain_control Give control of permanents as a cost. Mirrors Java’s CostGainControl. cost_gain_life Have an opponent gain life as a cost. Mirrors Java’s CostGainLife. cost_mill Mill cards as a cost. Mirrors Java’s CostMill. cost_part Shared helpers for Java CostPart parity on top of enum-based Rust cost parts. cost_part_mana Helpers for mana-part parity with Java CostPartMana. cost_part_with_list Shared list-payment helpers for parity with Java CostPartWithList. cost_part_with_trigger Trigger hooks for parity with Java CostPartWithTrigger. cost_pay_energy Pay energy counters as a cost. Mirrors Java’s CostPayEnergy. cost_pay_life Pay life as a cost. Mirrors Java’s CostPayLife. cost_pay_shards Pay mana shards as a cost. Mirrors Java’s CostPayShards. cost_payment cost_promise_gift Promise a gift to an opponent as a cost. Mirrors Java’s CostPromiseGift. cost_put_card_to_lib Put cards to library as a cost. Mirrors Java’s CostPutCardToLib. cost_put_counter Put counters on permanents as a cost. Mirrors Java’s CostPutCounter. cost_remove_any_counter Remove any counter type from permanents as a cost. Mirrors Java’s CostRemoveAnyCounter. cost_remove_counter Parity shim for Java CostRemoveCounter. cost_return Return permanents to hand as a cost. Mirrors Java’s CostReturn. cost_reveal Reveal cards as a cost. Mirrors Java’s CostReveal. cost_reveal_chosen Reveal a previously chosen player or type as a cost. Mirrors Java’s CostRevealChosen. cost_roll_dice Roll dice as a cost. Mirrors Java’s CostRollDice. cost_sacrifice Sacrifice permanents as a cost. Mirrors Java’s CostSacrifice. cost_sub_counter Remove counters from source as a cost. Mirrors Java’s CostRemoveCounter. cost_tap Tap the source permanent as a cost. Mirrors Java’s CostTap. cost_tap_type Tap other permanents of a type as a cost. Mirrors Java’s CostTapType. cost_unattach Unattach equipment as a cost. Mirrors Java’s CostUnattach. cost_untap Untap the source permanent as a cost. Mirrors Java’s CostUntap. cost_untap_type Untap other permanents of a type as a cost. Mirrors Java’s CostUntapType. cost_waterbend Waterbend as a cost. Mirrors Java’s CostWaterbend which extends CostPartMana. individual_cost_payment_instance Mirrors Java IndividualCostPaymentInstance. payment_decision Payment decision data — the intermediary between deciding and executing cost payment. selector_domain trait_cost_decision_maker Cost decision maker parity wrapper for Java CostDecisionMakerBase. trait_cost_visitor Cost visitor abstraction for parity with Java ICostVisitor<T>. Cost The complete cost to activate an ability. AmountSpec The amount slot of a CostParti32 (with
DYNAMIC_X_SENTINEL) once consumers are migrated. Mirrors Java’s
CostPart.convertAmount + AbilityUtils.calculateAmount split:
literals resolve trivially, X reads XPaid / SVar:X, named SVar
identifiers walk the host card’s SVar table at call time. CostPart RevealFrom A single component of an ability cost.
Mirrors Java’s CostPart hierarchy. add apply_text_change_effects can_pay Check if a cost can be paid by the given player for the given source card.
available_mana is the total mana available (pool + untapped sources). can_pay_ignoring_mana Check if a cost can be paid ignoring mana requirements.
Used for mana ability availability checks (to avoid circular dependency). can_pay_ignoring_mana_for_spell Check if a cost can be paid ignoring mana requirements, for a spell.
Passes a minimal SpellAbility with is_spell = true so that CantSacrifice
checks (e.g. Yasharn) can properly evaluate ValidCause$ Spell restrictions. can_pay_ignoring_mana_with_ability Check if a cost can be paid ignoring mana requirements while preserving
the full spell/ability context for non-mana legality checks. can_pay_with_ability Java parity helper: canPay(cost, ability-context). can_pay_with_ability_and_reserved convert_amount_type_to_words convert_int_and_type_to_words get_enlist_targets Find cards available to enlist: untapped, non-attacking, non-summoning-sick creatures you control. get_exiled_targets Find cards in exile across all players matching a type filter.
Used by ExiledMoveToGrave and can_pay checks. get_max_for_non_mana_x get_sacrifice_targets Find valid sacrifice targets on the battlefield for a player, filtered by type.
Mirrors Java’s CostSacrifice.getMaxAmountX() + CardLists.getValidCards(). get_sacrifice_targets_for_cost Find valid sacrifice targets for a cost, filtered both by type and
CantSacrifice-style legality before RNG selection. get_sub_counter_targets Find cards that can have counters removed for SubCounter<.../Type/...>. get_tap_type_targets Find valid tap-type targets (untapped permanents matching filter, excluding source). get_zone_targets Find valid exile/return targets in a given zone for a player, filtered by type. has_x_in_any_cost_part matches_exile_from_stack_filter matches_type_filter Check if a card matches a type filter string.
Thin wrapper around matches_change_type for use by individual cost modules. merge_to normalize_exile_base_filter parse_cost Parse a Cost$ value from the DSL. resolve_dynamic_amount static_ability_source_cards strip_exile_type_modifiers to_prompt_string Cost rendered for a player-facing prompt. Life uses the {LIFE} token so the
UI can draw a heart; mana keeps its {...} symbols. to_simple_string