Falco Spara, Pactweaver + Sensei's Divining Top + Jhoira's Familiar + Lorescale Coatl

Falco Spara, Pactweaver

Sensei's Divining Top

Jhoira's Familiar

Lorescale Coatl

How it works

1. Activate Sensei's Divining Top's second ability by tapping it, causing you to draw a card and put Sensei's Divining Top on top of your library.
2. Lorescale Coatl triggers, putting a +1/+1 counter on it.
3. Cast Sensei's Divining Top from the top of your library by paying 0 and removing a counter from a creature you control.
4. Repeat.

This loop turns your library into a bottomless well by leaning on the alternative casting method provided by Falco Spara, Pactweaver, which lets you cast spells off the top of your library by trading away counters from your creatures rather than paying mana. Sensei's Divining Top fuels the entire engine by drawing you a card and neatly returning itself to the top of your library upon activation, allowing you to cast it right back out repeatedly. Meanwhile, Jhoira's Familiar lightens the load by making that historic artifact cost {1} less, perfectly reducing Sensei's Divining Top's mana cost down to {0}. Every single time you draw a card in this looping dance, Lorescale Coatl happily grows larger and larger by triggering to collect a +1/+1 counter, giving you a massive threat alongside your endless card draw.