Is Trenzalore Clocktower good in Commander?

Trenzalore Clocktower in Commander — Combos, Decks & Price

Trenzalore Clocktower puts a free +1/+1 counter on each of your creatures at the start of your end step — no mana required, just having it in play. The cost is a tap ability that produces colorless mana, meaning it pulls land-slot weight while quietly snowballing your board, and in The Tenth Doctor // Rose Tyler decks that want counters on everything, that combination is exactly the payoff the strategy wants.

Best Commanders

Commanders with the highest synergy

01

The Tenth Doctor // Rose Tyler

93.9% of decks · synergy 0.91

Trenzalore Clocktower is near-universal in The Tenth Doctor // Rose Tyler decks because the commander's Companion mechanic rewards having creatures with counters, and a free end-step counter on every creature turns even token-width boards into threats without spending a single mana.

02

River Song

37.3% of decks · synergy 0.37

River Song decks often run a wide creature base that benefits from incremental power growth, and Trenzalore Clocktower delivers that for free every turn while still tapping for mana when you need it.

03

Missy

22.9% of decks · synergy 0.22

Missy's strategy leans on creating and leveraging creature tokens, and Trenzalore Clocktower quietly inflates every one of them each end step, turning a board of otherwise modest bodies into a serious clock.

04

The Rani

20.3% of decks · synergy 0.20

The Rani decks frequently care about +1/+1 counters as a resource and modifier, making Trenzalore Clocktower a low-opportunity-cost way to keep feeding that engine from a land slot.

05

Xolatoyac, the Smiling Flood

16.8% of decks · synergy 0.16

Xolatoyac, the Smiling Flood wants counters distributed across creatures to trigger its flood effects, and Trenzalore Clocktower provides a reliable, mana-free counter each turn without taking up a spell slot.

Format Analysis

Where it lives, where it can’t

Format	Verdict
commander	legal
legacy	legal
modern	not legal
pioneer	not legal
standard	not legal
vintage	legal
pauper	not legal
oathbreaker	legal

Commander is where Trenzalore Clocktower actually matters — it's a Doctor Who card with a mechanical identity built around the slow, cumulative advantage that multiplayer games reward. In longer games with multiple creatures in play, a free +1/+1 counter on each at every end step compounds into a meaningful board-state edge over even a handful of turns. Legacy and Vintage are legal but irrelevant; the card doesn't come close to competing with the efficiency those formats demand. Oathbreaker is the one non-Commander 60-card-adjacent format where it could see a niche home, specifically in planeswalker strategies that also run creature-heavy builds, but outside dedicated Doctor Who builds, Trenzalore Clocktower is a Commander card through and through.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Current pricing data for Trenzalore Clocktower isn't available in this snapshot, so check Scryfall or TCGPlayer for the live number. As a card from a licensed Doctor Who set with near-universal inclusion in its most popular commander archetype, it tends to carry a small premium over bulk — worth picking up when you see it in a trade binder rather than waiting.