The Tenth Doctor + Mana Echoes + Arc Blade + Docent of Perfection // Final Iteration

The Tenth Doctor

Mana Echoes

Arc Blade

Docent of Perfection // Final Iteration

How it works

1. Activate The Tenth Doctor by paying 7, removing all time counters from Arc Blade.
2. Arc Blade triggers, causing you to cast it from exile without paying its mana cost.
3. Docent of Perfection // Final Iteration triggers, creating a creature token.
4. When the creature token enters, Mana Echoes triggers, adding C for each creature you control that shares a creature type with the token.
5. Resolve Arc Blade.
6. Repeat.

This explosive loop relies on manipulating time and mana to overwhelm the board through an unlikely alliance of time travelers and spellslingers. By activating The Tenth Doctor's Timey-Wimey ability, you strip the final time counters off the exiled Arc Blade, forcing it to cast itself for free and triggering a cascade of instant-speed value. Each time Arc Blade is cast, Docent of Perfection // Final Iteration steps in to churn out a Human Wizard token, which in turn supercharges Mana Echoes to generate an ever-growing pool of colorless mana. Because those new Wizards share a type with the incoming token, Mana Echoes yields more than enough mana to fuel another activation of The Tenth Doctor, letting you repeat the cycle to deal infinite damage, flood the battlefield with tokens, and close out the game in a flurry of arcane energy.