Abathur, Evolution Master

You may choose to not untap Abathur during
your untap step. Whenever Abathur untaps,
remove all symbiote counters on all creatures.
As long as Abathur is tapped, creatures
with symbiote counters on them get +2/+2.
{t}: Choose a creature you control. Put a
symbiote counter on it.
3 XP: In addition, they have menace and trample.
7 XP: In addition, they have lifelink and vigilance.
10 XP: Instead, you may choose two creatures
you control.