Ziatora's Envoy
Creature — Lizard Warrior
Whenever this creature deals combat damage to a player, look at the top card of your library. You may play a land from the top of your library or cast a spell with mana value less than or equal to the damage dealt from the top of your library without paying its mana cost. If you don't, put that card into your hand.
Blitz
Legal in
Pioneer, Modern, Legacy, Vintage, Commander, Brawl, Historic
Rulings (6)
If a creature enters the battlefield as a copy of or becomes a copy of a creature whose blitz cost was paid, the copy won't have haste, won't be sacrificed, and its controller won't draw a card when it dies.
2022-04-29
“If you don't” in the second ability refers to whether you played a land or cast a spell from the top of your library, not just whether or not you cast a spell.
2022-04-29
You don't have to attack with the creature with blitz unless another ability says you do.
2022-04-29
If you choose to pay the blitz cost rather than the mana cost, you're still casting the spell. It goes on the stack and can be responded to and countered. You can cast a creature spell for its blitz cost only if you could cast that creature spell. Most of the time, this means during your main phase when the stack is empty.
2022-04-29