>>48199639P. Dawn. You can get Giovanni to +4 Sp.Atk and the enemies to -4/-5 which is more than enough.
Here's a +4 Sp. Atk/-4 Sp. Def Giovanni vs a Sunny Day max damage Hilda and Red. To be fair I am not sure who or what exsctly is the gold standard for EX Striker first Sync damage, but if you have ideas I can compare.
And before you say anything, consider that the one on the far right is enough to wipe out the whole board in MM,
