Basri's Lieutenant + Master Biomancer + Blasting Station

Basri's Lieutenant

Master Biomancer

Blasting Station

How it works

1. Activate Blasting Station by tapping it and sacrificing another creature with a +1/+1 counter on it.
2. When the creature dies, Basri's Lieutenant's second ability triggers, creating a 2/2 Knight creature token that enters the battlefield with at least two +1/+1 counters due to Master Biomancer.
3. When the Knight enters the battlefield, Blasting Station triggers, untapping itself.
4. Resolve the Blasting Station ability from step 1, dealing 1 damage to any target.
5. Repeat.