The One Ring + Tolarian Sentinel

2-card combo · U

Verdict

No — this loop costs 5 mana and a card every turn to maintain a protection lock that doesn't win the game.

Cards required: 2
Cheapest stack total: $0.05
Color identity: U
Popularity: 34 decks
Format: Commander

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Tolarian Sentinel bounces The One Ring for 1U and a discard, letting it recast for 4 and retrigger its protection-from-everything shield each upkeep. The lock is real — no damage, no targeted removal — but it demands a steady hand of fodder and five mana of investment per cycle just to tread water. Mono-blue stax shells are the only archetype with the patience for it, and even there the opponent's board state keeps growing.

Recipe

How it works

Prerequisites

Tolarian Sentinel does not have summoning sickness. You have at least one card in hand.

Steps

Activate Tolarian Sentinel by paying , discarding a card and tapping it, returning The One Ring from the battlefield to your hand.
Cast The One Ring by paying .
The One Ring triggers, giving you protection from everything until your next turn.
Repeat each turn.

Result

Prevent all damage that would be dealt to you; You have protection from everything; Lock

Variations

Cheaper, tighter, alternate lines

Heidar, Rimewind Master or Crystal Shard bounce The One Ring more efficiently if the goal is pure reset loops. The combo needs a finisher grafted on — Psychic Corrosion or Thassa's Oracle — otherwise it's a soft lock that concedes once the hand runs dry.