Dain, King of Durin's Folk

Defender, double strike (This creature can't attack.
It deals both first-strike and regular combat damage.)
Cumulative upkeep — Sacrifice a land or put a
-1/-1 counter on Dain, King of Durin's Folk.
(At the beginning of your upkeep, put an age counter
on this permanent, then sacrifice it unless you pay its
upkeep cost for each age counter on it.)
If Dain, King of Durin's Folk would die, instead
exile him then return him to the battlefield
transformed under his owner's