Webweaver Changeling

The lifegain clause is the tell that this was built for a graveyard, not a battlefield. A 3/5 with reach is a fine defensive body on its own: it walls fliers, trades up on the ground, and asks nothing of the deck around it. But the life only pays out when three or more creature cards are already sitting in your yard, which means the five points reward you for having churned first rather than nudging you to start. That gates the card toward decks that fill the graveyard as a matter of course rather than ones splashing it in for the wall. The shapeshifter line does the rest of the heavy lifting: a creature that reads as any type at once turns a generic green blocker into a tribal enabler, counting for any lord, any typal payoff, any "creatures you control of this type" clause, without committing to a single tribe. So the reach and toughness recruit it into a graveyard-fueled midrange shell, and the Changeling tag lets that same card moonlight as connective tissue in a typal deck that never expected a defensive five-drop to be on-theme. The lifegain is the smallest piece of the design and the clearest signal of intent: it switches on only once the deck it wants to live in is already doing what it does.