Thing in the Ice is also a Pioneer staple which offers up Awoken Horror when the counters are all removed
Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to creatures may become lethal if Harmonious Archon enters or leaves the battlefield during that turn
With enough creatures dealing combat damage to a player, this powerful Bant card can effectively double your mana or prevent opposing threats from doing much, making it an excellent stax commander
Here are some examples of instants
You can easily throw on 5 to 8 counters in a couple of turns in a four-player game, and the more people you add, the faster the Regent will stock up
If another creature becomes a copy of Zygon Infiltrator, it will become a copy of whatever Zygon Infiltrator is currently copying (if anything)