Noah the Arcane Duelist

When Noah, the Arcane Duelist blocks a creature, it gains a +1/+1 counter.
{g/u} Remove a +1/+1 counter. Add +0/+3 to Noah, the Arcane Duelist until end of turn.
{r/g} Remove a +1/+1 counter. Add +3/+0 to Noah, the Arcane Duelist until end of turn.
{u/r} Remove X +1/+1 counters. Counter target spell with converted mana cost of X.