Battle Mage Secrets: Opportunity in Explosive Silenced Summoners

This is a Explosive Weaponry ruleset game so All Monsters have the Blast ability.
The best strategy is to have fast monsters with Snipe, Sneak, Opportunity. For defense, Shield and Void will come in handy.

This is a Silenced Summoners ruleset game so Summoners do not give any stat buffs or debuffs or grant/use any abilities.

Pos 1 Monster: Demented Shark

Abilities:
Inspire - Gives all friendly Monsters +1 Melee attack.

Pos 3 Monster: Kulu Mastermind

Abilities:
Weapons Training - Adjacent monsters gain half this Monster's attack if they have no attacks themselves
Opportunity - It may attack from any position and will target the enemy Monster with the lowest health.
Shield - Reduced damage from Melee and Ranged attacks.
Attack damage gets halved (rounded up), except attack 1 which deals 0 damage
Reduces the Thorns damage to 1
Cancel Redemption damage

Pos 5 Monster: River Hellondale

Abilities:
Resurrect - When a friendly Monster dies it is brought back to life with 1 Health. This ability can only trigger once per battle
Inspire - Gives all friendly Monsters +1 Melee attack.