Sword of the Meek + Animation Module + Ashnod's Altar + Phantom Train

Sword of the Meek

Animation Module

Ashnod's Altar

Phantom Train

How it works

1. Activate Phantom Train by sacrificing Sword of the Meek, putting a +1/+1 counter on it.
2. Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
3. When the Servo enters, Sword of the Meek triggers, returning itself from your graveyard to the battlefield attached to the Servo.
4. Activate Ashnod's Altar by sacrificing the Servo, adding CC.
5. Repeat.

This clever loop uses Phantom Train as an engine, feeding it Sword of the Meek as a sacrifice target to start stacking +1/+1 counters. Each time that counter is placed, Animation Module steps in to let you pay a single mana and produce a fresh 1/1 Servo artifact creature token. That new token's arrival triggers Sword of the Meek to leap straight from your graveyard and attach itself right back to the Servo, ready to be fed into Ashnod's Altar. By sacrificing the Servo to Ashnod's Altar for two colorless mana—paying the one mana Animation Module asks for along the way—you net infinite colorless mana alongside endless sacrifice and death triggers.