Force of Vigor for Affinity, Eldrazi, Hammer Time, etc
Protection from everything might not mean much on a 10-drop creature like Progenitus, but granting that same level of protection to a player for a full turn cycle is down-right silly, and exactly the reason you see The One Ring in just about any format where it's [questionably] legal
Remember to take into account any Weakness or Resistance before applying any damage counters to a Pokemon after the attack
There are powerful cards that make shamans or turn into shamans like Fable of the Mirror-Breaker or Kumano Faces Kakkazan, but were not ranking them today
Just pick what you think ist fitting
Golgari (black/green) and Dimir (black/blue) builds playing Sheoldred already exist, and one of these color pairs might just emerge at the top of the new metagame