I've been jamming with this Sultai [[Sublime Epiphany]] Reclamation list. Rec + Epiphany is really mean, bringing Epiphany back to the hand with [[Shipwreck Dowser]] and [[Scholar of the Ages]]. You play ramp cards and whatever to make it to 6-7 mana and then try to lock your opponent out of the game from there.

This is a really rough sketch but it's a ton of fun. Surprisingly resilient to Teferi, if you have Rec in play then you just bounce Tef on your mainphase and counter him on the way back down and the lock is in effect.

No-one's surprised to hear that ramp cards are good, but I think Epiphany has the most inevitability of any wincon currently. Getting up to 12 lands and being able to counter 2 spells a turn while putting creatures in play is extremely hard for the opponent to turn around. Another card that has performed very well for me is [[Once and Future]], although Tamiyo might be better.

4 Arboreal Grazer (WAR) 149
4 Growth Spiral (RNA) 178
2 Essence Scatter (IKO) 49
2 Eliminate (M21) 97
1 Unsubstantiate (M21) 82
1 Heartless Act (IKO) 91
1 Repudiate // Replicate (RNA) 227
3 Uro, Titan of Nature's Wrath (THB) 229
1 Mystical Dispute (ELD) 58
1 Cultivate (M21) 177
4 Wilderness Reclamation (RNA) 149
1 Extinction Event (IKO) 88
1 Once and Future (ELD) 168
2 Shipwreck Dowser (M21) 71
1 Thryx, the Sudden Storm (THB) 76
1 Cavalier of Thorns (M20) 167
2 Sublime Epiphany (M21) 74
1 Ugin, the Ineffable (WAR) 2
1 Scholar of the Ages (M20) 74
2 Zagoth Triome (IKO) 259
3 Watery Grave (GRN) 259
4 Overgrown Tomb (GRN) 253
1 Temple of Malady (M21) 253
2 Breeding Pool (RNA) 246
2 Temple of Mystery (M21) 254
1 Thornwood Falls (IKO) 256
2 Island (DAR) 256
1 Castle Vantress (ELD) 242
1 Swamp (WAR) 258
3 Forest (THB) 287
2 Fabled Passage (ELD) 244
2 Emergence Zone (WAR) 245

I'm short a number of cards, the decklist is a very rough sketch. I just want to put something out there to see if anyone else has been working on something similar.