Rishadan Port

Mana denial as a land, charged by the turn rather than spent up front. The trick is the accounting: every activation ties up the Port and one generic mana to deny an opponent one land's worth of mana, a two-for-one commitment that looks like a wash until you notice it can repeat every turn and that the Port still taps for colorless on the turns you don't fire it. That repeatability is the whole design. A single Wasteland blows up one land once; this taps a land every turn it stays untapped, and against a deck stuck on three or four lands the cumulative drag is what wins. The aggressor uses it to keep a control deck off a fifth land for the swing turn; the control deck uses it to deny a critical color while it sets up. Either way the card asks the pilot to hold up the mana and read the opponent's draw, deciding which land to lock and when. The friction is real: the colorless-only mana ability and the one-mana tax mean a deck running it pays a tempo cost to itself, which is why it never warped a format the way unconditional land destruction can. It is precise pressure rather than blunt force, and the lands-as-resource style of play it rewards has kept it in the conversation for every format where attrition over mana, not over cards, decides the game.