Clement, the Worrywort | Intruder Alarm | Stickytongue Sentinel

Cards

Stickytongue Sentinel in hand.
Clement and
Intruder Alarm on the battlefield.
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.

Activate three Frogs you control by tapping them, adding ({2} magic symbol) ({G} magic symbol) that can only be spent to cast a creature spell.
Cast
Stickytongue Sentinel by paying ({2} magic symbol) ({G} magic symbol) .
When
Stickytongue Sentinel enters the battlefield, it,
Intruder Alarm and
Clement trigger.
Resolve the
Stickytongue Sentinel trigger, returning the creature with mana value 4 or greater from the battlefield to your hand.
Resolve the
Intruder Alarm trigger, untapping all creatures.
Resolve the
Clement trigger, choosing to return nothing to your hand.
Activate a Frog by tapping it, adding ({GU} magic symbol) that can only be spent to cast a creature spell.
Repeat step 7 until you have enough mana to cast the creature with mana value 4 or greater.
Cast the creature with mana value 4 or greater by paying its mana cost.
When the creature enters the battlefield,
Clement and
Intruder Alarm trigger.
Resolve the
Clement trigger, returning
Stickytongue Sentinel from your graveyard to your hand.
Resolve the
Intruder Alarm trigger, untapping all creatures.
Repeat.