I see this card being a sweet inclusion to Orzhov Lifegain lists like Karlov of the Ghost Council, Ayli, Eternal Pilgrim, and Regna, the Redeemer & Krav, the Unredeemed, decks that can properly use their own life totals as a resource to exploit (hello, Aetherflux Reservoir)
Predicting whether your opponent will switch out their Whimsicott, protect with their Mega Charizard Y, or try to catch you off guard with a powerful, offensive attack creates mind games as addictive and intense as ever
Once the planeswalker lands, you might cast more colorless spells to add more removal, but its plenty good to just kill a threat so Ugin sits around drawing cards
Flamehold Grappler Im scared of what Flamehold Grappler can do with mechanics like plot, or foretell and the like in other formats