When Cloud enters, search your library for an Equipment card, reveal it, put it into your hand, then shuffle.
As long as Cloud is equipped, if a triggered ability of Cloud or an Equipment attached to it triggers, that ability triggers an additional time.
Cloud is a mono-white Voltron/Equipment commander who tutors up your best Equipment on cast, then suits up to double every relevant trigger. You play cheap aggressive Equipment and trigger-heavy gear, attach it all to Cloud, and beat down with a doubled-up, hexproof-or-protected threat while value triggers snowball your board.
Built-in Equipment tutor every time he enters, so you find your key piece consistently
Doubles ETB/attack/combat triggers from Cloud and his Equipment for huge value swings
Cheap 2-mana commander recasts easily after removal
Mono-white gives access to powerful protection, anthems, and Equipment recursion
Doubled draw/lifegain/token triggers keep him relevant beyond pure combat
Classic Voltron fragility: targeted removal or sweepers can blow you out fast
Doubling only works while equipped, so unequip/disenchant effects shut it off
Mono-white struggles for card advantage and ramp compared to other colors
Vulnerable to commander tax if repeatedly killed without protection
Equipment-light gameplans collapse if Cloud is answered before suiting up