Vizier of Remedies, Lesser Masticore, Dross Scorpion, and Breya's Apprentice

Prerequisites

• Vizier of Remedies on the battlefield
• Lesser Masticore on the battlefield
• Dross Scorpion on the battlefield
• Breya's Apprentice on the battlefield
• Breya's Apprentice does not have summoning sickness
• Lesser Masticore does not have a -1/-1 counter on it

Steps

1. Activate Breya's Apprentice by tapping it and sacrificing Lesser Masticore
2. When Lesser Masticore dies, its persist ability and Dross Scorpion trigger
3. Resolve the Dross Scorpion trigger, untapping Breya's Apprentice
4. Resolve the Lesser Masticore trigger, returning it from your graveyard to the battlefield with no -1/-1 counters on it due to Vizier of Remedies
5. Resolve the Breya's Apprentice ability, either giving target creature +2/+0 until end of turn, or exiling the top card of your library with the ability to play it until the end of your next turn
6. Repeat

Results

• Exile your library
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinitely powerful creatures until end of turn
• Infinite sacrifice triggers