Behemoth Sledge

Three abilities picked so deliberately they tell you exactly who the equipment is for. The +2/+2 makes the wearer a genuine threat, trample sends excess damage past a chump or a smaller blocker, and lifelink swings the life total on whatever connects. The combination of trample and lifelink is the load-bearing part: against a partial block, the damage that tramples through still gains you life, so a single swing can stabilize and pressure in the same combat step. That is the Selesnya impulse distilled, the color pair that has always wanted to attack with something large without bleeding out the long game while doing it. What disciplines the rate is the equip cost. Three mana to suit up means the package is slow to come online, and when the bearer dies the Sledge stays on the battlefield: it sits unattached until you pay another three to move it onto a new creature. That re-equip tax pushes the card toward decks that field a few resilient bodies worth dressing up rather than a swarm of expendable ones, since every time your threat dies you spend a turn's worth of mana getting the engine running again. The Sledge draws no cards and protects nothing; it asks you to bring a creature worth the investment and rewards you for keeping that creature alive long enough to swing more than once.