Cavalier of Dawn 10 (Core Set 2020) 000 return it to the battlefield

return it to the battlefield tapped

then proliferate

The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard

(Each {U} in the mana costs of permanents you control counts toward your devotion to blue

Whenever an opponent casts a creature or planeswalker spell with the same name as a card in their graveyard

Cavalier of Dawn 10 (Core Set 2020) 000 return it to the battlefieldVigilance When this creature enters, destroy up to one target nonland permanent. Its controller creates a 3 3 colorless Golem artifact creature token. When this creature dies, return target artifact or enchantment card from your graveyard to your hand.