Looks like tomorrow’s troop is Rock Spirit as @en9nhcet posted a few weeks ago?
And taking a stab and guessing the spell is:
Earthquake
Destroy a row and column. Deal {1} damage randomly split among enemies, boosted by Brown Gems destroyed.
EDIT: Also the spells for the two troops @Rasper posted (Incubus and Minogor(?)) are possibly:
Bewitch
Charm 2 random enemies.
Malice
Deal {1} damage to the two weakest enemies. Deal double damage if I am damaged.