Control Magic effects and threaten effects like Act of Treason can steal commanders as well
Creepy food-based creatures have taken over the woods, the Fae folk that live deep in the woods branch out to the realms of men, and a terrible curse of a never ending sleep is spreading across the land after the New Phyrexian Invasion
The Avatar shrinesa five-card cycle themed around iconic locations from Avatar: The Last Airbender add even more power and depth to shrine strategies, with effects that range from token creation to card draw, life drain, ramp, and permanent team buffs
This takes a great effect to ultra-effective levels and can literally pile onto pain your opponents already feel when you use the +1 ability on Grist, the Hunger Tide, trigger Sphinx's Tutelage, or drop a Cultivator Colossus into play
Another target creature is chosen, and that creature gets +1/+1 counters according to either that player's lifegain or life loss that turn (whichever number is bigger)
you might consider adding other creatures with undying, or simply Mikaeus, the Unhallowed