Mikaeus, the Unhallowed, Cryptic Trilobite, and Skullclamp

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Cryptic Trilobite on the battlefield
• Skullclamp on the battlefield
• if Cryptic Trilobite does not have a +1/+1 counter on it available

Steps

1. Activate Cryptic Trilobite's first ability by removing a +1/+1 counter from it, adding that can only be spent to activate abilities
2. Repeat step 1 until Cryptic Trilobite does not have any +1/+1 counters on it
3. Activate Skullclamp's equip ability by paying , attaching it to Cryptic Trilobite
4. Cryptic Trilobite dies as a state-based action due to having zero toughness, triggering its undying ability and Skullclamp
5. Resolve the Cryptic Trilobite trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it
6. Resolve the Skullclamp trigger, causing you to draw two cards
7. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite colorless mana that can only be spent to activate abilities
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB