empowered steel paws from tornado warrior with damage marked does it die at end of turn? or survives

It dies — the moment Tornado Warrior's delayed disempower resolves, Steel Paws is left at 0 Might with damage still marked on it, and the lethal check happens before damage is healed.

Tornado Warrior's "disempower it at end of turn" is a delayed trigger that fires in the Ending Step (CR 317.1), which is before the Expiration Step where units are healed. Steel Paws is 0 printed Might with "[Empowered] > I have +7 [M]," so dropping the Empowered status takes it from 7 to 0 with no other boost — any non-zero marked damage is now lethal (CR 142.4.b), and the cleanup kills before healing (CR 323.5 task 3b, then 3c).

This is why it differs from the usual "damage and stat loss happen simultaneously" case: in a combat cleanup the heal and the expiry are part of the same special cleanup (FAQ #1093), but here the disempower is a trigger that resolves first, leaving a window where the damage is still there.

Edge case: if Steel Paws somehow has zero damage marked when it's disempowered, it just sits at 0 Might and survives.