Phelddagrif, Crafty Cutpurse, and Phyrexian Altar

Prerequisites

• Phelddagrif on the battlefield
• Crafty Cutpurse in hand
• Phyrexian Altar on the battlefield
• available

Steps

1. Cast Crafty Cutpurse by paying
2. Crafty Cutpurse enters the battlefield, causing all tokens that would be created under an opponent's control this turn to be created under your control instead
3. Activate Phelddagrif's first ability by paying , causing Phelddagrif to gain trample until end of turn and creating a 1/1 Hippo creature token
4. Activate Phyrexian Altar by sacrificing the Hippo token, adding
5. Repeat from step 3

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers