The first bit reads, Whenever a creature you control leaves the battlefield, if it had counters on it, put those counters on The Ozolith. The second bit allows you to move all of the counters on The Ozolith onto a Creature at the beginning of your combat step
In the right deck, this card can be untapped several times throughout the course of a turn, generating a lot of tokens
So it is rewarding as you get to play a different deck every day and do quests optimized for those decks
I rarely use Level 3, but it can help in a pinch
Also, the built-in flood protection makes these some of the best dual lands in MTG for slower Commander decks that prioritize card flow over speed
, Remove 100 charge counters from this artifact: Search your library for an artifact card, put that card onto the battlefield, then shuffle