Ok, well here I go at my first attempt with the aliens!

Monsters:

x3 Alien Mother
x3 Cosmic Horror Gang'el
x3 Alien Grey
x3 Alien Warrior
x2 Alien Hunter
x3 Nimble Momonga


Spells:

x3 Corruption Cell "A"
x3 Brain Control
x2 Creature Swap
x1 Graceful Charity
x1 Pot of Avarice
x1 Nobleman of Crossout
x1 Heavy Storm
x1 Mystical Space Typhoon
x1 Premature Burial

Traps:
x1 Call of the Haunted
x2 Dust Tornado
x3 Brainwashing Beam
x3 Shadow Spell

Well, it's not really anything amazing to look at but I wanna test it before I decide what changes should be made.

- One Shaodw Spell(maybe two)
+ 1x Crop Circles
1x Mystical Spce Typhoon

lmk
thanx

Umm...I have Typhoon in there....

Monsters: 17
3 Alien Mother
3 Cosmic Horror Gang'el
3 Alien Grey
3 Alien Warrior
2 Alien Hunter
3 Nimble Momonga

Momunga is lvl 2. With Crop Circles you could off one and a level 4 to summon the Alien Mother. Good stuff.

Three Gange'il seems to be a bit much in here. Just a tad.

Alien Grey isn't too hot either... Maybe Apprentice + Old Vindictive to give you some level 2 recruiters for Crop Circle shenanigans.

Spells: 14
3 Corruption Cell "A"
3 Brain Control
2 Creature Swap
1 Graceful Charity
1 Pot of Avarice
1 Nobleman of Crossout
1 Heavy Storm
1 Mystical Space Typhoon
1 Premature Burial

I'd cut one or two of the Corruption Cells for stuff that is more reliable. Smashing, Confiscation and Enemy Controller or Book of Moon all come to mind.

Traps: 9
1 Call of the Haunted
2 Dust Tornado
1 Brainwashing Beam
2 Crop Circles --> One of the best monster tutors. Chain it to removal.
3 Shadow Spell --> Mirror Force, Torrential, Ring. If you feel like it.