This particular Link 2 monster makes fusion summoning incredibly easy, and heres how: You can reveal a HERO fusion monster in your extra deck, and add two of the required materials from your deck to your hand, with the drawback that you cant summon non-HEROs the turn you activate this effect
If this card battles a DARK monster, its ATK is doubled during the Damage Step only
C Common Tuning X SPELL Add 1 "Synchron" Tuner from your Deck to your hand, then send the top card of your Deck to the GY
You can even Synchro Summon Martial Metal Marcher , which allows you to get an additional Synchro Tuner for Crystron Quariongandrax
You'll keep Fateful and Dracoback in doing so
Of course, it all depends on the meta, but that's what makes Water-type Pokemon so desirable: It's their flexibility and adaptability