Venti, Windborne Bard

+2: Up to one target creature gains flying until end of turn. Until your next turn, it can't attack or block.
-2: Target creature gains +1/+1 and flying until end of turn. Until your next turn, Venti can't be attacked except by creatures with flying.
-7: Deal 4 damage to each creature your opponent controls. Until your next turn, creatures your opponent controls can't attack or block.