REDU format ruling
Quillbolt Hedgehog

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)If this card is in your Graveyard: You can Special Summon this card, but banish it when it leaves the field. You must control a Tuner monster to activate and to resolve this effect.
Rulings
- Quillbolt Hedgehog's Special Summon effect is an Ignition Effect.
- If an effect is chained that removes your only Tuner monster from your side of the field, Quillbolt Hedgehog is not Special Summoned.
- If Quillbolt Hedgehog is flipped face-down after it is Special Summoned by its effect, it is not removed from play when it is removed from the field, even if it is flipped face-up.
- If Quillbolt Hedgehog is Special Summoned by its effect and is later removed from the field while Skill Drain is active, Quillbolt Hedgehog is still removed from play.
- If you Special Summon Quillbolt Hedgehog with its effect and afterwards remove it from play with Interdimensional Matter Transporter, Quillbolt Hedgehog is not returned to the field in the End Phase.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.