Wild Evocation

If a player reveals a nonland card, that player must cast that card if it's possible to do so, even if they don't want to. The player casts it as part of the resolution of Wild Evocation's ability. Timing restrictions based on the card's type (such as creature or sorcery) are ignored. Other play restrictions are not (such as "Cast [this card] only during combat").

If, as the result of Wild Evocation's ability, a player casts a card "without paying its mana cost," any X in the mana cost will be 0, and that player can't pay any alternative costs (such as Demon of Death's Gate's alternative cost). On the other hand, if the card has optional additional costs (such as kicker or multikicker), the player may pay those.

If a player casts a nonland card revealed with Wild Evocation's ability, it's put on the stack as a spell, then Wild Evocation's ability finishes resolving. The spell will then resolve as normal, after players get a chance to cast spells and activate abilities.