Tranquil Frillback (Extended Art) [March of the Machine: The Aftermath] Swamp Mountain you may exile Cosima

you may exile Cosima

Whenever you cast a creature spell

so it could be anywhere between 1 - 10 weeks for delivery

choose a nonlegendary creature that saddled it this turn and create a tapped and attacking token that's a copy of it

Where is the horn that was blowing

Tranquil Frillback (Extended Art) [March of the Machine: The Aftermath] Swamp Mountain you may exile CosimaSet: March of the Machine: The Aftermath Type: Creature Dinosaur Rarity: Rare Cost: {2}{G} When Tranquil Frillback enters the battlefield, you may pay G up to three times. When you pay this cost one or more times, choose up to that many Destroy target artifact or enchantment. Exile target player's graveyard. You gain 4 life.