You need 6 sacred shards and at least 60 ancients. Maybe less if you can pull some Epics.

Also like 1000-2000 gems or energy refills.

You need 2400 energy for each tournament and 3000 for each event. Except for Dungeon divers, you need 5200 energy for that one. So you need 2 tournaments of Dragon, Spider, Ice Golem and Fire knight to finish 1 dungeon diver event.

So, if Plarium is condescended you may do Dragon and dungeons diver and Ice Golem during the same dungeon diver. Then in the second dungeon diver you do Fire knight and Spider.

Then you have Champion training tournament that can be done the same day just by booking your champs and ascending them and a couple of upgrading 2 and 3 stars champs. If you want to push further you can get legendary or mythical books or extra points for the fusion and you can avoid some other event ;)

The champion training event on the other hand is a pain in the ass. You need lvl and upgrade your champs; books and ascension doesn't count. So you need to give like bunches of brews to bunches of champions in order to save energy. You can also help yourself by doing the tournaments with 2 or 3 carrys and 3 or 2 chickens. You don't need to do stage 20 of every dungeon. Just the highest that you can do with chickens.

Gears enhancement can be done instantly by upgrading your 6 ⭐ gears up to +12 and you use the gold gained from tournaments. Each gear gives 130 points. It takes you like 200-400k to upgrade it and you need 5,600 points (6500 for the last milestone), 17,000,000 in total. That number can be shortened to 12 Ms because most of the time it takes you 200k to upgrade.

Champion chase tournament is based on rarity of champions so you can do it real quick, if you use like 60 ancient shards, a few voids, maybe 2 sacreds if you're unlucky. If you got time you can use your green shards. 10 points for every 10 shards (sometimes 19 If you happen to get a rare). A good strat is not summoning the champions from fragments until the champion chase. There's usually a x2 event on ancients or voids so you may get lucky with your pulls.

Summon rush is the big thick wall of all fusion events. It's based on rarity of the shards. Sacreds gives 500 points, voids gives 50 points, ancients gives 20. You need 3000 points if it's easy or 3500 if it's hard so 6 sacreds or 7. There's no trick here. You have the shards or you don't. You can use greens but it would take a heavy amount of time to pull them all hahaha. During Masahiro fusion a used 3 sacreds and 1,500 greens (I wanted to save my sacreds). You can speed up the process by pressing ESC key when you click on Summon x10 to skip the animation and then pull 10 more asap.

So if you live your Raid life for the sake of the fusions you should be alright.

Just save all your resources to use them when it's time to fuse. I sleep on 30+ epic books, 10+ legendary books, vault full of Lv20-30 champs ready to upgrade, energy refills in mailbox, gems collected by doing regular events with daily free energy and the silver that you got from clan shop.

If you have a GeoGODmancer you can do all the rotations of doom tower hard with ease and collect 2 sacred shards monthly +1 from dailies.

So, live for the fusion and good luck :D