Longtusk Stalker

A stat boost you can pay for while the creature it improves is still a card in your hand: that is the sequencing trick with no cardboard equivalent, and it is what makes this small Cat worth studying. Energy has always been a bank you fill across a game, but welding it to a perpetual pump converts a pile of counters into stat lines that outlast bounce, blink, and even a trip through the graveyard. Spend two energy and the +1/+0 rides the creature permanently, not just this pass through the battlefield. The second choice is the wrinkle: you can grow a creature still in hand, so the buff lands before the thing you are buffing has ever been a legal target for removal. A kill spell answers a creature on the battlefield; it cannot touch the point of power you welded onto a card three turns before you cast it. The body is a fragile 1/1 and the payoff arrives slowly by design, because perpetual power that compounded every attack for cheap would be genuinely oppressive. What it demonstrates is the digital-only design lane in full: an effect whose entire value proposition is that it never resets, built for a client that can remember choices a physical card has no way to track.