Sliver Queen + Agatha of the Vile Cauldron + Gemhide Sliver + Cloudshredder Sliver

Sliver Queen

Agatha of the Vile Cauldron

Gemhide Sliver

Cloudshredder Sliver

How it works

1. Activate Silver Queen by paying 1, creating a 1/1 Sliver creature token.
2. Activate the Sliver token by tapping it, adding 1.
3. Repeat.

This elegant loop relies on Agatha of the Vile Cauldron's passive cost-reduction to discount Sliver Queen's token-creation ability down to just one mana. With Gemhide Sliver granting every Sliver the ability to tap for mana, the newly spawned Sliver token can immediately tap to pay for the Queen's reduced activation cost, generating an endless stream of creatures. Meanwhile, Cloudshredder Sliver ensures that all your swarm members enter the battlefield with haste and flying, ready to overrun the opponent the moment the loop concludes.