mtg gain life draw card Lich's Mastery (Dominaria) Powerful life gain and card

Looking Cube-ward, its an excellent addition to many mid-powered Cubes

Poison counter Commanders like Fynn the Fangbearer want proliferate cards to help them get their opponents up to 10 poison counters to close out the game

It lets you look at up to four cards when youre digging and has almost no opportunity cost to slot into a deck

Multicolor Fireglass Mentor Getting to choose from the top two cards instead of just exiling the top card is a big deal here, it massively reduces the odds of not getting a card you can use

These create small incidents of targeted damage, which allow you to trigger Gisa

Mana Vault would also appear in the same set with Mana Crypt following soon after as a promo