Ready for the previous multiplayer powerhouse that would have topped this list in the old days that's a bit diminished in Commander hence it hitting my Honorable Mention space
At any time, you can discard a card to give this indestructible and tap it
Notably its ability triggers on any sort of damage, not just combat damage, so equipping it with cards like Viridian Longbow could provide a consistent source of discard when your opponent has no Swamps
Putting counters on your board is also fantastic, given how many evasive creatures the deck runs
Rhythm of the Wild makes your creature spells uncounterable, but giving your creatures riot pretty much guarantees a +1/+1 counter if youve already got your other haste enablers online
Putrid Goblin comes back to the battlefield with no counters on it, and you can sacrifice it again and repeat this process indefinitely