Netcaster Spider

Reach has always been a defensive concession: it lets a grounded body trade up against the air force, but the spider or treefolk doing the blocking usually dies for its trouble against anything bigger than a one-drop flier. This design tweaks that contract. The +2/+0 on a block conditioned specifically on flying creatures turns a passive 2/3 wall into a 4/3 ambusher the moment a flier commits to the attack, which is exactly the size needed to eat most early-game evasive threats and survive. The pump is the whole point: it only fires on the block, only against flying, and only for the turn, so the card never threatens anything on offense and gives up nothing in the rate. It is green's color-pie answer to flying done as a combat trick baked into the creature rather than a separate card, and it punishes the kind of player who treats a reach blocker as a free chump rather than a real obstacle. A flier-heavy attacker that ignores the spider learns the hard way that the body grows to meet the threat.