Double Ability activate!
Burst Core + Nova Defencer
Burst Core: Allows your Helios Bakugan to neutralize all of your opponent's Ability Cards and Fusion Ability Cards played during the round this card was activated. Chaos Abilities are excluded from this effect.
Nova Defenser: Increases your Helios' power level by 200 points and decreases your opponent's Bakugan's power level by 400 points.
So, your Shooting Stardust, Canyon Snail and Glow Blow-Off are negated. However, my Red Valkyrie remains negated due to Hammersaur's effect being immune from Burst Core's effect.
So, I gain 200G's from Shooting Stardust's negation.
Helios & Metalfencer 1550G Vs. Elfin, Tripod Epsilon, Rafflesian & Hammersaur 1600G
I gain 400 from Canyon Snail's negation.
Helios & Metalfencer 1950G Vs. Elfin, Tripod Epsilon, Rafflesian & Hammersaur 1600G
You lose 200G's from Glow Blow-Off's negation.
Helios & Metalfencer 1950G Vs. Elfin, Tripod Epsilon, Rafflesian & Hammersaur 1400G
And now to add in the Nova Defencer's effect. You lose 400 and I gain 200.
Helios & Metalfencer 2150G Vs. Elfin, Tripod Epsilon, Rafflesian & Hammersaur 1000G
And that's the end. Not bad, Jake.