1. Rare Candy gives a +2 boost to Grass-type moves, it's just a Grass type
2. Overgrow is active, not that it really matters
Time to destroy~
Giga Drain -> Energy Ball -> Giga Drain
If successful P/E move, Chill and push back
If Mirror Coat, change that action to Leaf Blade and push back
If Sleast is in the evasive stage of a D/E move when you would attack, change that action to Chill the first time and Synthesis the second, pushing back each time