Serra Angel

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

Kenrith, the Returned King

{R}: All creatures gain trample and haste until end of turn.
{1}{G}: Put a +1/+1 counter on target creature.
{2}{W}: Target player gains 5 life.
{3}{U}: Target player draws a card.
{4}{B}: Put target creature card from a graveyard onto the battlefield under its owner's control.

Giant Growth

Target creature gets +3/+3 until end of turn.

Counterspell

Doom Blade

Wrath of God

Destroy all creatures. They can't be regenerated.

Llanowar Elves

Lightning Bolt

Lightning Bolt deals 3 damage to any target.