Pango, Survivor of Many Wars

Outlast {w}{b} ({w}{b}, {t}: Put a +1/+1 counter on this creature. Outlast only as a sorcery.)
Other Vampire creatures you control have outlast. Their outlast cost is equal to their converted mana cost. (For example, if that creature has a converted mana cost of {1}{w}{b}, then its outlast cost is {1}{w}{b}.)