Boros Garrison

The bounce is the cost, and it is a steeper one than the dual-color mana suggests. Entering tapped already concedes a turn of tempo; returning a land you control to your hand on top of that means the turn you play this, your available mana actually drops before it climbs. The compensation is that the returned land replays for value (a modal double-faced land you would rather not have committed, a Bojuka Bog or other enters-tapped land with a useful trigger, a channel land you can re-deploy on your terms), but the baseline experience is two land drops to net one untapped source of two colors. This is the karoo template, the cycle of guild-aligned bouncelands that traded raw speed for fixing density and a guaranteed second color with no shock-payment or life loss. The era that produced it was wrestling with how to make three-color and heavy-fixing decks viable without simply reprinting painless duals, and the answer was to charge in tempo rather than life or mana: you pay with the clock. That makes it a card for decks that intend to grind, where the lost turn is recouped over a long game and the recursion upside compounds, and a liability for anything trying to curve out on time. The replay-a-land clause also quietly enables loops with lands that want to leave and re-enter, which is where most of its non-obvious play has always lived.