As long as your devotion to green and red is less than seven, Xenagos isn't a creature.
At the beginning of combat on your turn, another target creature you control gains haste and gets +X/+X until end of turn, where X is that creature's power.
Near Mint - $8.90
Lightly Played - $7.10
Moderately Played - $6.30
Heavily Played - $5.40
Damaged - $4.50
Near Mint Spanish - $8.90
Lightly Played Spanish - $7.10
Moderately Played Spanish - $6.30
Heavily Played Spanish - $5.40
Damaged Spanish - $4.50