Noxious Spawnkeeper

Deathtouch
When Noxious Spawnkeeper enters the battlefield, create a 0/1 green Insect creature
token.
Whenever another Insect you control dies, you
may tap Noxious Spawnkeeper. If you do, it
fights target creature.
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It protects its larvae to the death, and given its toxic
venom, that death is usually yours.