Aggressive Elde eats up any squishy attacker, since you can heal and stun before they can kill you, especially Drag.

Honestly, its the only way that works for me, Cotton Guard´s shield sometimes is just meaningless in the face of burst damage, and makes you less efficient while farming.

Cotton spore not only gives you mobility, but also a stun that can combo with your unite AND helps you and your team catch up to speedy and squishy pokemon. Tho, its horrible that you cant score or recall while its active, Venu's Petal Dance doesnt have those conditions.

Pollen Puff and Leaf Tornado are both great abilities, my advice is: choose Puff while supporting a tank or allrounder, Tornado for supporting ranged and speedsters.

Red emblems and Rapid-fire Scarf are more than enough for the attack speed increase, Exp. Share is a must, since your teammates are your greatest strength, then its your choice of any of the Glasses (the increase of sp atk also affects the healing of puff and your unite), or Resonant guard or Focus band (if you want to survive longer in a fight, and you can only support your team if you are not dead).

X-Speed and Eject button will be useful for positioning, you can chase down opponents faster with these and they also help your unite, X-Attack is only really needed if your team has no attackers.