cards with flashback mtg Past in Flames (Doctor Who) Then exile it.) Flashback | Magic: The Gathering

Tezzeret is a colorless Planeswalker who comes down on turn three with four loyalty whose abilities synergize with each other, and there are several artifact shells in Standard that can exploit him, from Azorius Simulacrum Synthesizer decks to Dimir versions with Golbez and Dubious Delicacy

If you have a little bit of spare mana, you can use Loots remaining three abilities to get an incredible amount of value

Haunted One Haunted One is a background that gives all creatures +2/+0 and undying until end of turn, so you can attack almost freely

Brotherhoods End Hello, flexibility

The bad news is that Mana Vault is only legal in Commander, where it's on the list of Game Changer cards, and it's restricted in Vintage

They aren't fun to play against, if you are going to win slowly, at least have the courtesy of letting me play the game