Clement, the Worrywort, Intruder Alarm, and Stickytongue Sentinel

Prerequisites

• Clement, the Worrywort on the battlefield
• Intruder Alarm on the battlefield
• Stickytongue Sentinel in hand
• You control a nontoken creature with mana value 4 or greater that can be cast using only green and/or blue mana
• The number of Frogs you control without summoning sickness is equal to or greater than the mana value of the nontoken creature

Steps

1. Activate three Frogs you control by tapping them, adding that can only be spent to cast a creature spell
2. Cast Stickytongue Sentinel by paying
3. When Stickytongue Sentinel enters the battlefield, it, Intruder Alarm and Clement trigger
4. Resolve the Stickytongue Sentinel trigger, returning the creature with mana value 4 or greater from the battlefield to your hand
5. Resolve the Intruder Alarm trigger, untapping all creatures
6. Resolve the Clement trigger, choosing to return nothing to your hand
7. Activate a Frog by tapping it, adding that can only be spent to cast a creature spell
8. Repeat step 7 until you have enough mana to cast the creature with mana value 4 or greater
9. Cast the creature with mana value 4 or greater by paying its mana cost
10. When the creature enters the battlefield, Clement and Intruder Alarm trigger
11. Resolve the Clement trigger, returning Stickytongue Sentinel from your graveyard to your hand
12. Resolve the Intruder Alarm trigger, untapping all creatures
13. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite storm count
• Infinite untap of all creatures
• Infinite mana creatures you control can produce