Ramp Both red and blue struggle with mana acceleration , especially in multicolored decks
Dream Devourer: Is this broken
Tovolar, Dire Overlord The card draw ability on Tovolar, Dire Overlord is super powerful, and although the typical Tovolar werewolf EDH deck is a bit midrangey, there are over 40 wolves and werewolves in this Gruul commanders color identity at 2 mana or less, and some of those are pretty awesome, like Duskwatch Recruiter, Kessig Naturalist, Mayor of Avabruck, and Werewolf Pack Leader
Speaking of Disowned Ancestor Give em the ol 1-2 punch (Curving out): Play Disowned Ancestor on T1 and Kin-Tree Invocation on T2
This is a great mana sink when you dont have other plays to make, but if players cannot make the most of The Earth Crystals activated ability, then the Crystal is not worth playing