Slab Hammer

The combat trigger reads like a downside dressed as a buff, and that read is the whole point. Bouncing a land to your hand to pump a creature +2/+2 is a tempo loss most decks cannot afford to repeat: every swing costs you a land drop's worth of development unless you have somewhere productive to put that returned land. That requirement is the design hinge. Once your lands carry enter-the-battlefield triggers, the bounce stops being a tax and becomes an engine, recurring scry effects, drain triggers, or token generation while the equipped creature grows. The Equipment chassis matters here too: the +2/+2 is reusable turn after turn, and the equip cost is paid once, so the recurring expense is purely the land you choose to launder back through a tapland or a fetch. It is a build-around printed inside a generic combat enabler, dead weight in a deck not constructed to abuse it and a snowballing outlet in one that is. The cleanest read is to ignore the combat math and look at the bounce clause as the actual payload: this is a repeatable land-return outlet that happens to attach to a creature, and the +2/+2 is the rebate for using it on offense.