When it enters the battlefield, for each relevant ability (there are eleven of them) of creatures in your graveyard, you put that kind counter on any creature you control
The same, Id argue, is true for a MirrorLich deck with relatively few core cards, but a combo in the center, and for example Enchantress Combo or Underworld Dreams combo, where almost all the cards in the deck are core cards that are very difficult to remove
But a little fast mana or a card like Narset, Parter of Veils or Orcish Bowmasters to inhibit or punish the card draw can turn them into powerful tools
It's one of the strongest Izzet commanders ever printed thanks to generating ridiculous amount of mana and looping spells for game-winning combos
Whenever you sacrifice a land, create a tapped 4/4 green Beast creature token and untap this creature