Silumgar Monument

The monument cycle was a deliberate exercise in giving fixing a back end: a three-mana rock that taps for two colors early, then converts late-game flood into a body once the mana stops mattering. This Dimir entry leans into evasion, since the 4/4 it animates flies, which makes it the most aggressive payoff of the five and the one most willing to attack into a stalled board. The animation is the genuine cost, though. At six mana it asks you to commit the rock to combat, and because the creature mode expires when the turn does, the attacking Dragon is exposed to any removal that kills it outright, dropping you from a mana source and a body to neither. Left unanswered, the artifact reverts and stays on the battlefield as a rock again, so the flight is a window you repurchase every combat rather than a permanent conversion. That repeatability is the whole balancing act: the monument ramps toward its own activation, but the six-mana back end only rents you the flier for a single swing, and the worst outcome is walking that rock into an answer and losing your mana source with it. This belongs to a long line of mana-rock-that-occasionally-swings designs, distinguished here by the allied pair it fixes and the flier it puts in the air.