Malakir Soothsayer

A recurring draw spell assembled entirely out of bodies on the board, which makes it a different animal from a one-shot cantrip. The activation carries no mana cost, only a toll: tap this Vampire Shaman, tap one other untapped Ally, and the two of them together buy a card off the top for a point of life. The second tap is the constraint that pays for the effect. You cannot keep an Ally back to block, hold it ready to attack, and still feed the Soothsayer; every card drawn costs the offensive or defensive utility of two creatures for the turn. The life loss is the smaller bill. The 4/4 body is large enough to soak a removal spell but slow enough that the card sits dead until you have already fielded a wide Ally board, which is the same precondition every Cohort card demands. That circularity is the honest limit on the design: this is the strongest payoff in the Cohort suite precisely because it does nothing until the suite is already online, then refills your hand each turn the board stays intact. Cohort, the keyword that requires an untapped Ally alongside the activating creature, was built to reward exactly this kind of go-wide tribal deck, and the Soothsayer is where the mechanic converts a crowded battlefield into raw card advantage.