Card Tips:Number 91: Thunder Spark Dragon
- So far there are only 8 cards in the game that can attach additional Xyz Materials to this card in order to activate its second effect: "Overlay Eater", "Xyz Unit", "Xyz Import", Overlay Capture", "Hazy Pillar", "Spirit Converter", "Overlay Regen", and "Number 75: Bamboozling Gossip Shadow".
- "Spirit Converter" and "Overlay Regen" are good options as "Spirit Converter" can attach more than one monster as an Xyz Material, combined with easy swarm capabilities, while "Overlay Regen" is very easy to use, as it becomes material itself, making it a quick means of gathering the materials needed.
- Have at least 2 copies of "Overlay Regen" ready as soon as you Xyz Summon this card. Its effect second effect should be activated right away or it may not be possible at all.
- However, "Number 75: Bamboozling Gossip Shadow" is the most recommended as with its effect, it can immediately attach 3 Xyz Materials—its Xyz Materials along with itself—to "Number 91: Thunder Spark Dragon".
- The Hunder family can help Xyz Summoning this card, as well as being available targets for "Spirit Converter".
- This card can be useful by Special Summon a monster such as "Hardened Armed Dragon", "Kagetokage" or "Elemental HERO Bubbleman" and activate "Inferno Reckless Summon" to Summon two more copies, then Overlay them for this card. The other player(s) won't gain any advantage as its first effect that leaves them no monsters to use.
- This card can be used with "Rank-Up-Magic Astral Force" to Xyz Summon "Hieratic Dragon King of Atum".
- It may be possible to activate the second effect of this card if you have 2 copies of "Number 19: Freezadon" on the field. As you activate this card's effect, activate the effects of the copies of "Freezerdon".
- "Hysteric Party" with a handful of "Harpie" monsters in the Graveyard can quickly Summon this card as well as any other Rank 4 Xyz monster.
- If you Xyz Summon this monster using three "Harpie" monsters and use its effect, you can activate "Hysteric Party" and Special Summon the monsters used as the Xyz Materials and make another Rank 4 monster, like "Harpie's Pet Phantasmal Dragon" and "Evilswarm Ouroboros".
