altair mtg card Kelsien, the Plague | Secret Lair the Plague gets +1/+1 for each experience counter you have.T Altair Ibn-La'Ahad

With most equipment decks winning in an ostensibly fair way (through creature combat), I dont see these being as egregious as tutoring for a combo

Terras backside (giggity) is what really makes this commander strong though, turning her into a powerful saga creature, cloning other enchantments on the field, and producing tons of mana

There are a couple of more tame effects (i.e., Crystal Fragments) that are technically DFCs though

The excellent Blood for the Blood God

While Flesh Carver is never going to be the best creature in the deck or the most powerful black creature possible for a given situation he might well be the best on average across all the decks and situations possible