Kolaghan, the Storm's Fury

Dash is the keyword that makes this a different animal from the usual five-mana Dragon lord. The anthem effect (your whole board swings for +1/+0 whenever a Dragon attacks) is fine on a body that sticks around, but the real friction is that an anthem only matters when you already have a board, and a five-drop that dies to removal before it can attack does nothing. Dash answers that by letting the Dragon arrive with haste, trigger its own attack bonus the turn it lands, and bounce back to hand before sorcery-speed removal gets a window. You pay the same five mana either way, and the choice is whether you want a permanent lord that asks to survive a turn cycle or a recurring haymaker that pings in for damage and resets. That second mode is what gives the card its place in aggressive Dragon shells: it is a finisher you can keep replaying, immune to the board wipe that would otherwise punish committing a Dragon tribe to the table. The anthem reading itself is broad, triggering off any Dragon you control attacking rather than off this one specifically, so a wide flying board gets the pump even on turns the Kolaghan stays home. Two clean modes built into one card, with dash doing the work of turning a vulnerable midrange lord into a hit-and-run threat that never sits still long enough to be answered.