Cloud, Planet's Champion

Equipment-matters has been a recurring white-red itch in Magic's design history, but most attempts pin the bonus to a generic Equipped clause and call it done. This one builds the entire identity around the discount and the asymmetry of the buff. The double strike and indestructibility only switch on during your own turn, which means the card is a brawler, not a wall: it folds blockers and shrugs off destruction effects when swinging, then reverts to a vulnerable 4/4 on the crackback. That window is the whole design discipline. It rewards committing to the attack rather than holding back, and it keeps the indestructible clause from making the creature an unkillable defensive anchor. The second ability is the engine: equip costs that target this creature run two mana cheaper, so the deck it wants is one stuffed with Equipment that can be re-routed and reattached across a turn for almost nothing. The fantasy is the Buster Sword changing hands and the swordsman who carries it growing more dangerous each time the gear lands, and the mechanics deliver that literally: every reattachment is a discount, every attack a potential lethal swing through a board that can neither block profitably nor destroy the body. It is a payoff card for an archetype that asks you to build wide on artifacts and narrow on threats, with the discount doing the work of making that plan affordable.