Desecrated Dais

{t}: Add {w} or {b}.

{w}, {t}: Create a Blood token. You gain 2 life.

{b}, {t}: Until end of turn, Blood tokens you
control have '{1}, {t}, Pay 2 life, Sacrifice this
artifact: Draw a card.'

Sacrifice a creature: Untap Desecrated Dais and create a Blood token. Activate only once per turn.