Anytime you tap an Elf during your turn, you get to put a +1/+1 counter on it and then you untap that Elf
3 Rafiki Mysterious Sage Art by: Giulia Riva The First Chapter cards portray more than just the main characters and villains from Disney animated movies
What does removing these counters do, you ask
Cryptbreaker is the only comparable card to come to mind and it only compares in sytle, not in power or playability
It later opened some space for designers to get into with legendary creatures
The biggest downside of the card is that its slightly hard to cast, but between Ancient Ziggurat, Aether Vial, Noble Hierarch, and just naming Wizard with Cavern of Souls / Unclaimed Territory, Ive found that downside to be manageable