While Kaalia works with all three of these creature types, if a player wanted to go all in on a Mardu Dragon deck while ignoring demons and angels, Kaalia could enable such a strategy quite well
This often will use the full Vintage legal card pool, such as the Power 9 cards like Black Lotus and Ancestral Recall, hence the name
The Alchemy version, Thayan Evokers, ditches most of this design altogether for something entirely different, though double team does a fine myriad impression
There are also some auras with triggered abilities when they leave the battlefield which youll get to cash in on each turn when you sacrifice the Stangg Twin
Some treefolk already gain life when they ETB, and Treebeard should be a perfect addition to an EDH lifegain, treefolk, or toughness-matters deck
This is going to be bonkers in Commander, though, protecting things from board wipes, poofing Voltron attackers, blanking blockers