Bolivar Trask

Sentinel spells that you cast cost {2} less to cast.
{4}{c}{c}, Create a 6/6 Sentinel Creature
Token, with Flying, First Strike, and Trample.
{2}{r}{t}Deal 2 damage to any target.
Treat that Token as a Colorless
Artifact Creature.
Messiah (this cards color is all colors if used
as a commander.)