Talia the Uniter

This spell can't be countered.
Flying, Menace, Lifelink, Protection from instants.
When Talia the Uniter enters the battlefield or
attacks, you may sacrifice a permanent of each card
type. For each permanent sacrificed this way, each
opponent sacrifices a permanent of the same type
with the highest mana value. If they don't, Talia
deals damage to them equal to the mana value of
the permanent you sacrificed.