CR / RELEASE 2026-07-24
Rule 356.4
Apply discounts.
Rule hierarchy
Direct children
356.4.aDiscounts may be applied by the card being played or by any other card or effect.356.4.bDiscounts may say that cards "cost [amount] less" or that one or more of their costs are "reduced by [amount]."356.4.cDiscounts that only apply to a component of the cost will be applied when that component is added to the cost of the spell and before any other discounts. Example: Ezreal, Prodigy reads “optional additional costs you pay cost [1] or [A] less.” When playing a Frigid Touch and choosing to pay the additional cost in step 2, as soon as the additional cost is added to the cost of the spell, Ezreal, Prodigy’s discount is applied to it.356.4.dDiscounts that apply to the total cost of a spell and not any one component of the cost must be applied after any discount that applies only to a component of the cost.356.4.eIf a discount applies a minimum cost, that minimum applies only to that discount. Example: Eager Apprentice says "While I'm at a battlefield, the Energy costs for spells you play is reduced by [1], to a minimum of [1]." A player who controls Eager Apprentice and a unit with 7 Might plays Sky Splitter, a spell that costs 8 Energy and says "This spell's Energy cost is reduced by the highest Might among units you control." That player can choose to apply Eager Apprentice's discount first, reducing Sky Splitter's Energy cost to 7, then apply Sky Splitter's discount, reducing its Energy cost to 0. If they applied these discounts in the other order, Sky Splitter's Energy cost would be 1.356.4.fDiscounts can reduce additional costs, including to 0.