Shelob, Child of Ungoliant + Thornbite Staff + Psionic Gift
Shelob, Child of Ungoliant
Thornbite Staff
Psionic Gift
Destroy each creature that enters the battlefield under an opponent's controlDestroy all creatures opponents controlLock
How it works
Activate the Spider with Thornbite Staff and Psionic Gift attached by tapping it, dealing 1 damage to a creature an opponent controls and destroying it due to the Spider's deathtouch.
When the creature dies, Shelob and the Spider tapped in step 1 trigger.
Resolve the Shelob trigger, creating a token copy of the creature that died that is a Food artifact.
Resolve the Spider trigger, untapping it.
Repeat as desired. You can also repeat this loop whenever a creature enters the battlefield under an opponent's control.
This loop turns any creature you control into a lethal sharpshooter by enchanting them with Psionic Gift and equipping them with Thornbite Staff, granting the ability to ping targets for 1 damage. Because Shelob, Child of Ungoliant grants your Spiders deathtouch, that single point of damage is enough to instantly destroy any creature it hits. Every time a creature dies to this effect, Thornbite Staff untaps its wielder while Shelob replaces the fallen foe with a Food token copy, locking down the board and completely wiping out your opponents' creatures as fast as they can play them.