Lyla, Holographic Assistant + Basking Broodscale + Fecundity

Lyla, Holographic Assistant

Basking Broodscale

Fecundity

How it works

1. Draw a card.
2. Lyla triggers, putting a +1/+1 counter on Basking Broodscale.
3. Basking Broodscale triggers, creating a 0/1 Eldrazi Spawn creature token.
4. Activate the Eldrazi Spawn by sacrificing it, adding C.
5. When the Eldrazi Spawn dies, Fecundity triggers, causing you to draw a card.
6. Repeat from step 2.

This elegant loop turns a single card draw into an endless engine of growth and sacrifice. Once you draw a card, Lyla, Holographic Assistant uses that moment to place a +1/+1 counter on Basking Broodscale, which in turn triggers the Broodscale to spawn an Eldrazi Spawn token. Sacrificing that token for mana feeds Fecundity, which immediately draws you a card to restart Lyla, Holographic Assistant and trigger the whole cycle anew.