Legendary Creature — Time Lord Doctor

The Thirteenth Doctor

Mana value3EDHREC#4,871

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The Commander

Paradox — Whenever you cast a spell from anywhere other than your hand, put a +1/+1 counter on target creature.

Team TARDIS — At the beginning of your end step, untap each creature you control with a counter on it.

Guide

Gameplan

The Thirteenth Doctor is a Simic value engine built around casting spells from exile and graveyards—suspend, foretell, adventure, flashback, cascade, plot, and impulse draw all trigger Paradox to drop +1/+1 counters, while Team TARDIS untaps your counter-laden creatures every end step for repeated attacks, blocks, and ability activations. You ramp early, develop a counter-matters board, and snowball card advantage from alternate-zone casting before closing with an oversized, perpetually-untapping crew. As a Doctor, she's best paired with a companion background to round out the deck's identity and synergy.

Strengths

Generates free +1/+1 counters every time you cast from exile/graveyard, fueling +1/+1 and proliferate synergies
Team TARDIS grants pseudo-vigilance and lets tap-ability creatures fire twice per turn cycle
Simic colors offer elite ramp, card draw, and counter payoffs
Low cost (3 MV) means she hits the board early and gets going quickly

Weaknesses

Counters and the untap engine evaporate to a single board wipe, resetting your tempo
Removal-heavy metas punish the commander since most value hinges on her being in play
Needs critical mass of alternate-zone spells; a generic Simic goodstuff build underutilizes her
No built-in card advantage or protection on the commander herself

Key Cards

As Foretold — Lets you cast foretold/exiled spells for free, repeatedly triggering Paradox for counters.
Aeve, Progenitor Ooze — Storm copies trigger off each spell and the copies grow huge while Team TARDIS keeps them untapped.
Etali, Primal Storm — Casting impulsively from exile off its attack triggers Paradox, and Team TARDIS untaps it to attack again.
Inkshield — A foretell payoff that makes blockers while Paradox adds a counter to your board.
Hardened Scales — Multiplies every Paradox trigger, turning incidental counters into a fast clock.
Vorel of the Hull Clade — Doubles counters on a target and untaps each end step thanks to Team TARDIS.

Upgrade Path

Lean hard into alternate-zone casting—load up on suspend, foretell, cascade, and free-spell enablers like As Foretold and Finale of Devastation so Paradox triggers constantly. Add counter doublers (Doubling Season, Branching Evolution) and proliferate to convert incidental counters into lethal threats, plus untap-payoff creatures that exploit Team TARDIS. Round it out with strong Simic ramp and protection (Heroic Intervention, Lightning Greaves) so your engine survives interaction.

Core Cards

Lunar Hatchling100%
Cinder Glade100%
Confession Dial100%
Psychic Paper100%
Wreck and Rebuild100%
Thijarian Witness100%
Karvanista, Loyal Lupari // Lupari Shield100%
Sonic Screwdriver100%
Graham O'Brien100%
Madame Vastra100%
Dreamroot Cascade100%
Impending Flux100%

From 1 Mythicwyrm deck.

Win Conditions

▸Beat down with oversized, perpetually-untapping creatures that swing and block every turn
▸Commander damage from a counter-stacked Voltron threat
▸Go-wide counter swarm pumped by proliferate and doublers
▸Combo finish via repeated untaps enabling tap-to-mana or tap-to-damage engines

Archetypes

+1/+1 Counters — Paradox showers counters and Team TARDIS rewards keeping creatures loaded with them.
Spellslinger / Cascade-Storm — Every cascade, suspend, and free-cast spell triggers Paradox, chaining counters and value.
Foretell / Suspend Value — The deck weaponizes alternate-zone casting mechanics that all line up with Paradox.
Voltron — Stacking counters on one creature with repeated untaps makes a resilient, evasive threat.