Each damage counter counts as much damage as it has printed on it
The Ancient One One blue, one black, Legendary Creature - Spirit God - 8/8 - Mythic Rare Descend 8 The Ancient One cant attack or block unless there are eight or more permanent cards in your graveyard
"The one additional constraint is that to take me up on this offer, you can't tell anyone you opened it, or post about before selling it to me"
All in all, its a solid green card with a late-game bonus, but it probably wont keep the price unless someone finds a good way to crack it
Sure, you have to have a ton of Elf creatures in play, but thats the goal of Elfball anyway
Selesnya isn't known for supporting +1/+1 Counters, with most commander options being Mono Green or Simic, but thankfully Atraxa, Praetors' Voice is the most popular and can play all of the cards