I feel like Ichthellids need more love.
How about...
Ichthellid Queen 5 Mana Undead Insect
Psychic Immune Climbing
Mutate Ichthellid- You cannot cast this creature directly. You must cast this creature on an existing Ichthellid mutating it adding the Ichthellid back to your spellbook.
As this queen's quick action you may 1 mana to add an egg token to an Ichthellid Creature may target itself.
Ability Inject Larva Deal 2 damage and remove egg token on queen to add a Larva token on creature
Attack 2 Dice 5+ for stuck
Host 3 Mana Living
3 Life Cannot Move Cannot attack
Impregnate Incantation 3 Mana Adds a larva token to target living creature.
Twins 6 Mana Mutate Ichthellid.
Psychic Immune Climbing
7 Life Fast 3 Dice 2 Armor When this creature is summoned put another copy from your spellbook into it's zone.
Spitter 5 Mana Mutate Ichthellid.
Psychic Immune Climbing
10 Life 2 Armor
Attack 1:3 Attack dice 1 Piercing 1 Range 7+ Corrode 11-12 2 Corrode
Attack 2 4 Attack 1 Piercing