Mountain Titan

Whenever you cast a blue spell, this creature gets +1/+1 until end of turn.

Whenever you cast a black spell, this creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Whenever you cast a noncreature spell, this creature gets +3/+0 until end of turn.

Whenever you cast your second spell each turn, put a +1/+1 counter on this creature and it gains flying until end of turn.