Altostratus Eldrazi Hunter

Flying, Menace.
If this card is on the battlefield with Cirrus this card also does not lose flying.
If an Eldrazi with annihilator attacks anyone then Alto becomes {ut} and defends that Eldrazi
Landfall: if a colorless land enters the battlefield under anyone's control Alto gains {1} energy counter. If Alto reaches {5} energy counters he gains annihilator one.
{t}and sacrifice five energy counters Alto does five damage to all Eldrazis
Some say he's a protector, others say a monster, but to those