Hexgold Slith

The Slith mechanic has always been a self-contained aggro engine: connect with a player, grow, and let the clock steepen with every unblocked hit. Slith Firewalker and Slith Predator already snowballed this way, and the growth pattern survives intact; what changes is that this one arrives with a small energy account and a single question about how to spend it. The two energy banked on entry buys exactly one activation of first strike, no more, and the timing box on that decision is tight: the payment rides an attack trigger, so it resolves during Declare Attackers, before your opponent has committed a blocker. You are betting on a block, not reacting to one. First strike does no work getting the counter (the counter only lands on combat damage to a player, and there is no trample to push it past a defender); what it buys is survival against the block you expect. Read the board, decide a creature is likely to step in front, and pay up front so the 2/1 strikes first and lives through the trade Sliths have always been fragile to. The discipline is knowing when not to spend: because energy stays with you once given, declining the trigger keeps both counters in reserve for a later swing, even if this body dies in combat this turn. What you cannot do is refill the tank. The account is finite; once you cash it in on a read that misses, this is a naked two-drop again, with no reset.