Falco Spara, Pactweaver + Sensei's Divining Top + Kykar, Wind's Fury + Arcbound Crusher

Falco Spara, Pactweaver

Sensei's Divining Top

Kykar, Wind's Fury

Arcbound Crusher

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. Cast Sensei's Divining Top from the top of your library by paying 1 and removing a counter from a creature you control.
3. Kykar triggers, creating a 1/1 Spirit creature token.
4. When Sensei's Divining Top enters, Arcbound Crusher triggers, putting a +1/+1 counter on Arcbound Crusher.
5. Activate Kykar by sacrificing the Spirit, adding .
6. Repeat.

This ingenious loop turns your library into a self-sustaining engine by letting you repeatedly cast Sensei's Divining Top off the top of your deck, using Falco Spara, Pactweaver's alternative cost to pay for it by consuming counters instead of mana. Every time you cast the Top, Kykar, Wind's Fury rewards your noncreature spell with a flying Spirit token, which you can immediately sacrifice for red mana to help fund the loop. Meanwhile, Arcbound Crusher happily watches the artifacts arrive and depart, growing larger with a fresh +1/+1 counter every time Sensei's Divining Top re-enters the battlefield.