The Archimandrite is the main incentive for a monk tribal deck in EDH, allowing you to tap monks to draw a card and give them all +X/+0
Being able to draw your Rhystic Study, Smothering Tithe, or The One Ring next is a huge deal, and there are whole combos that get better and more consistent with this card around
Esika, God of the Tree / The Prismatic Bridge Legends like Sisay, Weatherlight Captain and Jodah, the Unifier are mostly just 5-color soup commanders that could play planeswalkers, but they thrive off creatures
The "2/0" in the top of the corner means that it costs two to cast and zero to activate
You must still follow any timing restrictions and permissions, including those based on the card's type
The seven first ones are only applied in best-of-one games