Just some ideas for new statuses as the game expands:

Mystery - allies with this status are played face down and remain Hidden and unable to attack/use ability until they are revealed.
Leech - allies with this status is healed when it leaves combat. Amount healed is the damage it dealt.
Regen - hero/ally with this status regenerates 1 health per turn. (Yes bad wolf)
Drain - like Poison but uses resource instead.
Curse - like Poison but uses SE instead.
Cripple - like Poison but loses Attack instead. If hero is inflicted it will affect its weapon.
Rust - like Poison but loses Durability instead (affects whatever items with durability)
Debilitate - allies with this status loses all passive/active abilities and cannot be buffed in any way (attachment/ability).