Tengu format ruling
Crystal Beast Ruby Carbuncle
Card effect (current official text)When this card is Special Summoned: You can Special Summon as many "Crystal Beast" Monster Cards as possible from your Spell & Trap Zones. If this face-up card is destroyed in a Monster Zone, you can place it face-up in your Spell & Trap Zone as a Continuous Spell, instead of sending it to the GY.
Rulings
- When you activate this card's effect, you must Summon all "Crystal Beast" monsters in your Spell & Trap Card Zone that you have open Monster Card Zones for. You cannot choose to Summon fewer than the maximum possible.
- If you have no "Crystal Beast" monsters in your Spell & Trap Card Zone when you Special Summon "Crystal Beast Ruby Carbuncle", you cannot activate this effect.
- You choose whether or not to use the Crystal Beast effect at the time the destroyed monster would be sent to the GY.
- This effect does not use the Chain.
- This effect cannot be used if a "Crystal Beast" monster is destroyed by a card effect while face-down.
- If multiple "Crystal Beast" monsters are destroyed at the same time, and you do not have enough open Spell & Trap Card Zones to place them all in as Continuous Spell Cards, you choose which (if any) to place in your Spell & Trap Card Zone.
- If your opponent controls one of your "Crystal Beast" monsters and it is destroyed, your opponent can choose to place it in their Spell & Trap Card Zone. If they choose not to, it is sent to your GY.
- If Macro Cosmos or Banisher of the Light is active on the field when a Crystal Beast monster is destroyed, you can use its effect and still place it in your Spell & Trap Card Zone.
- If a Crystal Beast is destroyed by Bottomless Trap Hole it will be removed from play and you cannot activate its effect.
- While Skill Drain is active on the field, a Crystal Beast monster that is destroyed will be sent to the GY and cannot be put in the Spell & Trap Card Zone.
- If you control a Crystal Beast equipped with Premature Burial and have no open Spell & Trap Card Zones, when that Crystal Beast is destroyed Premature Burial is also destroyed and then you can choose to put that Crystal Beast into the now empty Zone.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.