Emperor Dragon

{b}, Pay 2 life: Target creature gains deathtouch until end of turn.
{w}, Target opponent gains 2 life: Target creature gains lifelink until end of turn.
{4}{w}{w}{b}{b}, Lose 10 life, Target opponent gains 10 life: Creatures you control gain
+10/+10 and gains indestructible and
trample until end of turn.