I love cannons!! Honestly feel like it's the most fun pirate archetype, and I think other factions could have cannons too, so here are my ideas!
Mana cannon [Minion/Chaos] (3/0/5)
Inanimate
Deals 2 damage to a random enemy Minion after the owner uses a spell that deals damage
Scrap Cannon [Minion/Fortune] (3/0/5)
Inanimate
Deals 2 damage to a random enemy Minion when a friendly Golem dies
Snowball Cannon [Minion/Balance] (3/0/5)
Inanimate
Combat Start: Deal 1 frost damage to a random enemy minion
Plunder: increase this card's damage by 1
Trash Cannon [Minion/Nature] (3/0/5)
Inanimate
Deal 2 damage to a random enemy Minion when your opponent plays a Poison
Now for some "weirder" cannons and cannon related cards
Cannon Bot [Minion/Fortune] (3/2/4)
Plunder: deal 2 damage to a random enemy minion
Glimmer Cannon [Minion/Fortune] (3/0/5)
Inanimate
Whenever you splurge, deal the amount splurged as damage to a random enemy minion
Splurge (2): gain +1/+1
Glass Cannon [Minion/Balance] (3/0/1)
Inanimate
If a friendly minion dies before combat start, deal 3 damage to a random enemy minion
Human Cannonball [Spell/Neutral] (3 or 4 cost probably)
All your cannons gain "Combat Start: If a friendly minion is in the same column as this card, force them to attack"
Snowball War [Spell/Balance] (4 cost)
Choose a Snowball Cannon to shoot at all enemy minions once
Confetti Cannon [Minion/Chaos] (3/0/5)
Inanimate
When a groupie is summoned, give it +1/+1 and deal 1 damage to a random enemy
