There are exceptions to this depending on the meta at the time and the format youre talking about, but four mana really seems to be the sweet spot
This is where Raised by Giants and other cards like Belt of Giant Strength come in handy: the power boosts you use to goad everything can now be repurposed for a voltron kill
This card absolutely has competitive appeal and the restriction is well worth working around where possible
Moreover, its evolution from Finneon adds a layer of progression and achievement for trainers who appreciate the growth and development of their Pokmon
Special Summon from your Extra Deck, 1 "The Phantom Knights", "Raidraptor", or "Xyz Dragon" Xyz Monster that is 1 Rank higher or lower than this card, by using this face-up card you control as material, but destroy it during your opponent's next End Phase (this is treated as an Xyz Summon, transfer this card's materials)
Really neat, flexible counters and an outlet for all this energy is really solid, 2 mana for that is a just solid enabler for a mechanics based deck