Lord Kroak, Eternal Mind

Indestructible, Flying
Arcane Vassals - Your Sorceries and Enchantments
get convoke if they did not already.
{g}{g}: Target creature gains +2/+2 and Trample
until end of turn.
{u}{u}: Target creature gains Flying and Hexproof
until end of turn.
Celestial Deliverance - {w}{w}{w}{w}{w}: Destroy all
opponent creatures.