Sensei's Divining Top + Traxos, Scourge of Kroog + Mystic Forge + A Realm Reborn

Sensei's Divining Top

Traxos, Scourge of Kroog

Mystic Forge

A Realm Reborn

How it works

1. Activate Traxos by tapping it, adding 1.
2. 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.
3. Cast Sensei's Divining Top from the top of your library by paying 1.
4. Traxos triggers, untapping itself.
5. Repeat.

This clever loop turns your topdeck into an endless engine by leveraging the mana-producing utility granted by A Realm Reborn to cast spells directly from the top of your library via Mystic Forge. Once Sensei's Divining Top is tapped to draw a card and place itself back on top of your library, you can recast it for the exact mana you just generated, keeping the cycle going indefinitely. Because Sensei's Divining Top counts as a historic spell, every time you recast it, Traxos, Scourge of Kroog triggers and untaps itself so you can tap it for mana all over again.