H.E.R.B.I.E. Scout Unit

Four mana for a 2/1 flier reads as underpowered until you count what the enters trigger actually buys: a fresh card in hand plus a land drop out of hand, tapped. That second clause is the interesting part, because it doesn't replace your normal land for turn; it stacks on top of it, turning a single creature into a burst of two lands in a turn while the draw refills the hand it just spent. The design lineage here is the value-flier that pays its own way: bodies whose combat relevance is almost incidental to the card advantage and ramp stapled to the front. The flying matters less as a clock than as insurance that a 2/1 with a spent ability still trades up or chips in when the game grinds. What keeps the package from being oppressive is the body itself: a 2/1 dies to nearly everything, so the value is front-loaded into the ETB and the creature that remains is a liability as often as a threat. The tapped land is the other governor; you get the acceleration, but not the same turn, so it smooths a curve rather than launching an explosive one. It is a smoothing engine wearing a creature's clothes, built for decks that want to hit land drops and see more cards without giving up a body on the board.