The Third Doctor gets +1/+1 for each noncreature token you control.
When The Third Doctor enters, create your choice of a Clue token, a Food token, or a Treasure token.
Flood the board with noncreature tokens (Clues, Treasures, Food, Maps, Powerstones) to pump The Third Doctor into a huge tramplng threat while drawing cards and ramping. You play a value-heavy midrange game generating artifact tokens every turn, then close with commander damage or a token-fueled finisher. Doctor Who's Doctor/companion synergy lets you partner him with a companion background for extra value.
Self-pumping commander that scales with a strategy you'd run anyway (token generation)
Trample makes blocking nearly impossible, enabling commander-damage kills
Token engines double as card advantage (Clues) and ramp (Treasures)
Sultai-adjacent GU shell has deep token and artifact support
Relies on the commander being in play—prone to removal and the recast tax
Slow to assemble; token engines take time to snowball
Noncreature-token count can be wiped by mass artifact removal
Lacks innate evasion beyond trample, so chump-friendly only if pumped huge