2 Apocalypse / Decree Of Annihilation / Devastation / Obliterate / Jokulhaups As the best wrath effects in Commander, all of the above cards have been piled together on this list
The former card provides a unique case study to carefully watch over time: currently, the three-color Neon Ink version is the most valuable, but how long until it is reprinted with the latest foiling technique, in the rarest Collector Booster, with a serialized number denoting its scarcity
It has quite a history as it was a prize card that originated as part of the Tamamushi University Hyper Test campaign back in 1998
Next I would consider stuff like Shamanic Revelation, Collective Unconscious, Freyalise, Llanowar's Fury, or maybe Inspiring Call if you'll be distributing enough +1/+1 counters to creatures
Should it fail to cut the competitive mustard, however, then demand will be non-existent outside of Commander
Lesson of the Divine on its own, allowed the tank to hold down an enemy for 2 turns for 0 mana and net 0 cards