Khar'Ghal, the Aberration

Haste, Trample
Whenever you cast a creature spell, put a +1/+1 counter on Khar'Ghal, the Aberration.
Whenever a creature attacks, put a +1/+1 counter on Khar'Ghal, the Aberration.
Creature spells cost {1} less to cast for each counter on Khar'Ghal, the Aberration.