|First thing first: I developed this team for my current situation, as I'm only Rank 130, so I could not assemble a top team without exceding the cost. Also this is the first time that i submit a team here. So suggestion are welcome! Thanks.
Blue Vegito - Super Vegito - support card
Blue Vegito - SSJ4 Vegeta - support card
Everything revolves around your 4 core cards: Blue Vegitos, SSJ4 Vegeta, and Super Vegito.
(notice the "support card" will always be Bulma, God Vegeta, or Vegito). Try, if possible, to save rainbow spheres for Bulma, because her recovery skill is amazing. With Blue and Super Vegito, you will always be almost immune to normal attacks, but a little bit weak against Super Attacks, which can hit up to 100k against the wrong character. Plain you rotation accordingly and always enter the turn with enough HP (better wasting one Senzu than one Dragon Stone).
If you don't have all the support card I listed here, dont worry, you may be able to swap them and obtain similar results: i chose these because they are defensive oriented cards that pair well with my core cards.
For what concerns Items, i usually take Senzu, Dende, Moori and Ranfan. Use Moori and Ranfan as soon as the last fight starts, so you will deal more and take less damage. If you have weaker support cards, or the non dokkaned version of some, maybe swap Moori for Ghost Usher to avoid attacks.
ONE LAST TIPThe best suggestion I can give you is: if you have the non-dokkaned version of Blue and Super Vegito, try to go for them first. They are the first cards that I was able to Dokkan and they are easier to obtain. They will greatly improve your team.