Casting spells

To cast a spell is to take a card from where it is (usually the hand), put it on the stack, and pay its costs, so that it will eventually resolve and have its effect. Previously, the action of casting a spell, or casting a card as a spell, was referred to on cards as “playing” that spell or that card.

All things equal, it's best to wait until the last possible moment to cast your spells.

Rules
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