Sazed, Vessel of Harmony

Indestructible
At the beginning of your upkeep, choose one. The same choice cannot be made more than twice in a row:
Preservation - Prevent all damage from sources your opponents control until your next upkeep. Put a Harmony counter on Sazed.
Ruin - If a source you control would deal damage, it deals twice that much damage instead until your next upkeep. Put a Discord counter on Sazed.

Sazed, Vessel of Harmony cannot attack or block unless there is an equal number of Discord and Harmo