Evoke

Evoke is a keyword ability that represents two abilities: a static ability that functions in any zone from which the card can be played and a triggered ability that functions in play. "Evoke [cost]" means "You may play this card by paying [cost] rather than paying its mana cost" and "When this permanent comes into play, if its evoke cost was paid, its controller sacrifices it." Paying a card's evoke cost follows the rules for paying alternative costs in rules 409.1b and 409.1f-h. See rule 502.74, "Evoke."