1st Place from 59.000,00 Euro (Light Played) This card that was created for a special occasion by Richard Garfield
The card itself is a great bit of recursion on the front side, and its flip side Leyline Surge can give you a huge advantage
The only reasons it isn't higher are because it requires a costly six mana each turn to pull off, eating into resources you could be spending winning, and because needing two colours in your colour identity limits the decks it could fit into
If you do have a way to reduce equip costs or even get one for free every turn Heartseeker is a budget option worth checking out
Kellan, the Fae-Blooded Kellan is an adventure card with a clear, consistent game plan
I feel like the first creature to add kind of has to be Nesting Dragon, which checks all the boxes