yugioh gishki deck Psychelone [DT07-EN080] Super Rare Gishki Deck Breakdown | Guides,

Each Synchro Monster lists its summoning requirements in its card description, though almost every Synchro Monster requires exactly one Tuner to summon

Next effect is more fairer, as it has said cost

Flamvell Package: This package involves Flamvell Firedog , a 1900 ATK beater that gets you a Fire monster with 200 or less DEF from your deck when it beats something by battle, summoning Flamvell Magician as a Level 4 Tuner, making a Synchro 8, and pairs it with Rekindling , making a powerful comeback tool with these monsters

There are much better options for Burn decks than Sparks, so players would be much better off by not including this card in their deck and going for something else