mtg foundations highest value cards Best in At the beginning of your upkeep My Top 10 Cards from

If a spell has in its mana cost, use the value chosen for that X to determine the mana value of that spell

Mikaeus, the Unhallowed Mikaeus, the Unhallowed was an early two-card combo boogieman in Commander

I also wanted to mention that Mana Crypt is in the Special Guests sheet for this set, which will hopefully make it a little bit easier to grab one

Similarly, if you sacrifice a creature to activate a mana ability while activating Heirloom Epic's ability, that creature won't be on the battlefield when you pay the ability's activation cost, so you won't be able to tap that creature rather than pay one of the mana in the activation cost

Between the card selection, the built-in ramp, and the vigilance (did someone say voltron?), I could see an interesting deck emerging from our favorite eugenicist