The odd thing like that goes a very long way with card quality, tutors and recursion effects
Upheaval, Gifts Ungiven, Yawgmoth's Will, Balance (the most ironically named unfair card), Wheel of Fortune, Gaea's Cradle, Tolarian Academy, Survival of the Fittest (a classic combo with Recurring Nightmare), Vedalken Shackles
Even though Tapu Lele doesnt do too much damage, it has no weaknesses and with its abilities Wonder Tag and Tapu Cure, it can almost act as a support card
Relatively low popularity point in the genre so probably lower print runs
It still needs a tweak or two, but even as it is, it's worked really well for me so far
Advanced modes let you play things like best-of-three, so tabletop MTG players might fancy this option