Devoted Duelist
Flurry is spell-count damage without the storm baggage: no scaling, no chained payoff, just a single ping to each opponent the moment you cast your second spell each turn. That deliberate ceiling is what keeps a 2/1 with haste honest. The reward is fixed at one damage, so this pushes a deck toward playing two cheap spells a turn as a rhythm rather than a combo, rewarding density of cantrips, cheap removal, and one-drops instead of any explosive multi-spell turn. In a multiplayer game the trigger scales with the table (one damage to each opponent), which quietly turns a modest body into a reach engine when the board is wide, but the per-turn cap means it never spirals the way a storm count would. The Goblin Monk pairing is the tell: this is aggression that wants to curve out and keep casting, not a spellslinger's payoff waiting for a critical mass. Haste closes the design loop, letting the 2/1 apply pressure the turn it lands so the Flurry damage is incremental gravy on top of an already-attacking clock rather than the whole plan.
