Jolrael, Voice of Zhalfir - [Extended Art] March of the Machine: The Aftermath (MAT) WCDecks If Primeval Spawn would enter

If Primeval Spawn would enter the battlefield and it wasn't cast or no mana was spent to cast it

But according to my calculations

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if it isn't being declared as an attacker

Jolrael, Voice of Zhalfir - [Extended Art] March of the Machine: The Aftermath (MAT) WCDecks If Primeval Spawn would enterAt the beginning of combat on your turn, up to one target land you control becomes an X X green and blue Bird creature with flying and haste until end of turn, where X is the number of cards in your hand. It's still a land. Whenever a land creature you control deals combat damage to a player, draw a card.