Specifically, you get to conjure the Power Nine, which are: Ancestral Recall Black Lotus Mox Emerald Mox Jet Mox Pearl Mox Ruby Mox Sapphire Timetwister Time Walk Even better, you can blink Oracle of the Alpha a few times to get even more copies of cards like Time Walk in your deck to start taking as many turns as you need
Its not a very flashy 1v1 card, but an excellent control commander card, similar to Casualties of War
I now have two Meowths because of this
Teferi, Temporal Archmage Theres a competitive EDH deck out there that essentially goes infinite with Teferi, Temporal Archmage, The Chain Veil, and a couple mana rocks
This set sees the return of proliferate - which allows you to put another counter on as many things as you want - but its the new mechanics that really stand out, because they help reinforce the story