Restless Reef

The wrinkle in this cycle of dual manlands is that the attack trigger isn't a rider on the beatdown: it's a second win condition wearing the same body. A creature-land that pumps out four mill per swing turns your fixing into a clock that closes games from the top of an opponent's library rather than through their life total, an axis most lands never threaten at all. That reframes the whole activation math. Most creature-lands ask whether you can afford to point a land into combat and risk a two-for-one; here, the risk buys you real mill acceleration alongside a 4/4 with deathtouch, and the deathtouch is what protects the swing: blockers that would eat a smaller attacker think twice against a creature that kills whatever it touches, so the Shark tends to connect unblocked, mill four, and survive to do it again. The color pair matters, too. Blue-black is the pairing that has always wanted its lands to do more than fix, because control shells run short on threats and dislike drawing spells that rot in play once the board stalls. A land that untaps as fixing, then becomes a self-contained mill engine when the game goes long, answers the flood problem and the mill plan at once. The entering-tapped clause and the four-mana activation are the tax that pays for all of it: it comes online slowly and swings slowly, so the payoff never arrives on a tempo curve, only on a grind.