REDU format ruling
Djinn Presider of Rituals

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)When you Ritual Summon a monster, you can banish this card from your Graveyard as 1 of the monsters required for the Ritual Summon. If the monster Ritual Summoned using this card destroys a monster by battle, the controller of the Ritual Monster draws 1 card.
Rulings
- If "Neo-Spacian Dark Panther" copies the name and effect of this card and is used for a Ritual Summon, you will not be able to draw when the Ritual Monster destroys a monster by battle.
- The effect to draw when the Ritual Monster destroys a monster by battle is applied even if "Skill Drain" is active.
- If the Ritual Monster Summoned using this card as one of the Tributes battles a monster with the same ATK, you cannot draw with this effect.
- Even if you remove more than 1 copy of this card for the Ritual Summon of a Ritual Monster you will only draw 1 card each time that Ritual Monster destroys a monster by battle.
- The effect to draw a card does not start a Chain. It occurs when the monster destroyed by battle is sent to the GY.
- If the Ritual Monster that was Ritual Summoned using this card is flipped face-down, this card’s effect is no longer applied.
- If you remove this card from play for the Ritual Summon of "Divine Grace – Northwemko" it counts towards the number of cards you can select for the effect of "Divine Grace – Northwemko."
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.