Invasion

Kicker {6}
If you have at least 10 Alien creature cards on
the field at once you may cast this spell. This
spell can not be countered. For each turn this
spell in on the field, create a Drone Token.
All Alien creatures get +5/+5, Flying, First
strike, and haste, and protection from exile.
When this enchantment enters the battlefield, all opponent creatures take 1 damage.
If kicked, this goes to your hand
instead of graveyard or exile.