Fionn, Guardian of Ignosi

: Partner. Whenever one or more cards are exiled from a graveyard, create a token copy of Mana Crypt. You may cast the copy.
-2: Exile a card from a graveyard. If that card is a creature card, put three loyalty counters on Fionn, Guardian of Ignosi.
-6: Create an artifact named "Phylactery" with "At the beginning of your upkeep, choose a card in exile, cast it without paying its mana cost.