Now, if you're going for a swarm based warlord, then your current set up is, like you said, very slow. Before I get to the swarm idea, I would first highly suggest you put one or two Nullifies in your book, because you have no easy was of avoiding incantations. True, your [mwcard=MWSTX2FFQ05] Harshforge Plate[/mwcard] makes casting on your
slightly more difficult, but any aggro book will have more than enough mana to just not care, as I'm sure you've already found out. Then you also have to worry about Corrodes with all the armor your stacking.
Onto the swarm; if you're thinking about swarming, remember that the key to swarming is getting creatures out fast. What is your typical T1 - T4 moves? With your current set-up, I'm thinking:
- T1: 19 mana: Barracks (12), Construction Yard (7)
- T2: 9 mana, Barracks 2 mana, Con.Yard 1 mana: Deploy Goblin Grunt (2 from Barracks, 2 from pool) and Quick Cast Archer's Watchtower (1 from CY and 3 from pool) -> 4 mana
- T3: 13 mana, B (3 mana), CY (1 mana): Dep. Goblin Slinger (B3 and Pool 4), Summon GG (Pool 4). No QC ->5 mana
- T4: 14 mana, B (3), CY (2): Dep GG (3 B & 1 Pool), Summon GG (4 pool), Final QC Battle Forge (2 from CY, 6 from pool) -> 3 mana
- T5: 12 mana pool, Barracks 3 mana, Construction Yard 1 mana, Battle Forge 1 mana.
For a swarm book, getting out five creatures is not bad over the course of three turns, though your Grunts will be Squishy and your Slinger in the tower might be targeted first because of the
Range +1 and
Indirect being much more annoying than a Goblin Grunt's 3 melee attack.
*Edit*: Have you thought about taking out the Bridge Troll and adding in two more Goblin Grunts, one more Goblin Slinger, and one more Wall of Earth?