Curator Beastie, Lesser Masticore, and Megatog

Prerequisites

• Curator Beastie on the battlefield
• Lesser Masticore on the battlefield
• Megatog on the battlefield
• Lesser Masticore does not have a -1/-1 counter on it

Steps

1. Activate Megatog by sacrificing Lesser Masticore
2. When Lesser Masticore dies, its persist ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it due to Curator Beastie
3. Resolve the Megatog ability, giving it +3/+3 until end of turn
4. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinitely large Megatog until end of turn