Shaleskin Bruiser
Trample is the keyword carrying the entire design. A pump that can vault this creature into double-digit power means nothing if one chump blocker erases it, so the excess spilling past the wall is what keeps the arithmetic from collapsing the moment the defending player throws a body in the way. As a tribal capstone, it gains +3/+0 for every other attacking Beast, which puts it at ten power the instant two more Beasts join the swing and climbs steeply from there as the board widens. The 4/4 body for seven is a deliberate non-bargain, priced this way precisely because the creature was never meant to attack alone; it reads as slow and overcosted the moment you try to evaluate it in isolation. That is the correct read for a top-end reward in a go-wide aggro shell. The deck that commits a row of Beasts and then cashes the whole board in at once is the real cost; the cast is just the payoff arriving.
