Muldrotha, the Gravetide + Displacer Kitten + Sol Ring + Phantom Train

4-card combo · BGU

Verdict

Yes — this 4-card loop generates infinite ETB and LTB triggers by cycling Sol Ring through Phantom Train's sacrifice engine under Muldrotha's graveyard recursion.

Cards required: 4
Cheapest stack total: $41.73
Color identity: BGU
Popularity: 2 decks
Format: Commander

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Phantom Train sacrifices Sol Ring to activate, then Muldrotha recasts Sol Ring from the graveyard for 1; each cast triggers Displacer Kitten, which blinks Muldrotha and resets her once-per-turn artifact casting clause. The loop lives in the Sultai graveyard-value archetype — any Muldrotha shell that already runs Sol Ring and Displacer Kitten is only one piece away at any given time.

Recipe

How it works

Prerequisites

You have not cast an artifact spell using Muldrotha this turn.

Steps

Activate Sol Ring by tapping it, adding .
Activate Phantom Train by sacrificing Sol Ring
Cast Sol Ring from your graveyard by paying .
Displacer Kitten triggers, blinking Muldrotha.
Repeat.

Result

Infinite LTB; Infinite ETB; Infinite storm count; Infinite +1/+1 counters on a creature

Variations

Cheaper, tighter, alternate lines

Any other 1-mana artifact in the graveyard can substitute for Sol Ring as the sacrificed piece, as long as the mana produced covers the recast cost. The loop produces infinite storm count and infinite ETB triggers but needs a payoff — Altar of the Brood mills tables out as an on-board closer, while Disciple of the Vault or Impact Tremors converts the death loop into a win immediately.