Keyword: Devouring Monster

Rapacious Hunger — Whenever another creature dies, put a +1/+1 counter on Haruspex.
Devouring Monster — , Remove X +1/+1 counters from Haruspex: Add X mana of any one color.

Rapacious Hunger — Whenever another creature dies, put a +1/+1 counter on Haruspex.
Devouring Monster — , Remove X +1/+1 counters from Haruspex: Add X mana of any one color.