Rampaging Spiketail

Swampcycling is what keeps this 5/6 dinosaur out of the dead-in-hand pile: when your lands stall, it becomes a two-mana Swamp tutor; when you are flush on mana, it is a resilient beater with a combat-warping enter trigger. That double duty is precisely the liability landcycling was built to erase, letting a top-heavy threat moonlight as fixing so a deck can carry an expensive curve without choking on uncastable cards early. The entry ability is the payoff for actually hardcasting it: +2/+0 and indestructible until end of turn, handed to a creature you already control. Because you will usually cast the Spiketail in a precombat main phase, the trigger resolves before combat, so it can protect itself: it lands as a 7/6 that shrugs off destruction-based removal for the turn, or it pumps a mana dork or hatebear into a body that survives the swing you are setting up. The trigger goes on the stack once the creature is already on the battlefield, which means it can be answered with an instant, and an opponent holding removal can point it at the intended target in response and strand the indestructibility on a corpse. The buff is also fleeting, covering the turn it arrives and wearing off in cleanup. What the design resolves is the tax every fat black beater pays, that a threat drawn early is a brick. This one declines to ever be dead: cheap fixing at the bottom of the curve, a hard-to-kill threat at the top.