Perennation is a six-man sorcery that lets you bring back a creature from your graveyard back to the battlefield with a hexproof and an indestructible counter, making it practically untouchable
In Delita's case, it's more "Ambition Will Make You Forget", until he is left Lonely at the Top
In addition to hitting the board quickly, an easily abusable end-of-turn ability slapped onto a 5/4 creature makes for an incredibly threatening commander
I like that they managed to stick with the characteristic topdeck strategy of Aminatou, the Fateshifter, but expanded into enchantress territory here
They did things they had no right to do, and they did them at a mana cost you wouldn't believe
This does let you trigger Repartee twice, but there are lots of situations where a sorcery-speed blink effect does very little, even with the counter in the mix