Keirtoe, Adrift in Clouds

Flying Lifelink Glow Tide X
Kertoe has burn X where X is the half the number glow of counters on it rounded down.
Kertoe enters the battlefield with X glow and tide counters on it.
At the beginning of your upkeep gain X life and
scry Y where X is the number of glow counters
on kertoe and Y is the number of tide counters.
When the last tide counter is removed from Kertoe it deals damage to you equal to
the number of glow counters on it.