Terran Siege Tank

Phalanx - This creature may be attacked as if it was
a Planeswalker, and you may block creatures that attack this creature. Creatures that deal damage to this creature in this way fight each other.

Siege - At the beginning of combat, choose Siege or Tank. It gains those abilities until another is chosen.
Siege - This creature gains {r}{w}: Deal 6 damage to any target.
Tank - This creature gains +6/+0, First Strike, Vigilance, and Trample.