I've been trying to tackle Tag Arena Gold 1 for Ramanatu missions and ive been struggling to remain in the green. What i've noticed is that almost every team runs a fusion champ and not bothering with a single fusion since Ive started this game is costing me

i

What are the minimum or basic requirements needed to tackle a fusion successfully.

In terms of shards, potions, silver and energy.

whats a number for each for someone who doesn't spend at all. I 1 key UNM ,NM clan boss and clear Doom Tower Hard every rotation. Im also level 100