Hulking Chull

Defender
{r}, {t}: Hulking Chull gets -2/+2 until end of
turn.
When Hulking Chull dies, create a Gemheart
token with two stormlight counters on it. (It's a
Gem artifact with "{t}, Remove X stormlight counters
from Gemheart: Add X mana of any one color".)