Heliod, Sun-Crowned: Theros Beyond Death Acabado:Normal destroy target nonblack creature that

destroy target nonblack creature that player controls

All Sliver creatures have shadow

Flying Creatures you control have "Whenever this creature becomes the target of a spell or ability for the first time each turn

(Seat of the Synod isn't a spell

Flying Whenever Ancient Silver Dragon deals combat damage to a player

Heliod, Sun-Crowned: Theros Beyond Death Acabado:Normal destroy target nonblack creature thatIndestructible As long as your devotion to white is less than five, Heliod isn't a creature. Whenever you gain life, put a +1 +1 counter on target creature or enchantment you control. {1}{W}: Another target creature gains lifelink until end of turn.