REDU format ruling
Cyber Valley

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)You can use 1 of these effects.
● When this card is targeted for an attack by an opponent's monster: You can banish this card; draw 1 card, then end the Battle Phase.
● You can target 1 face-up monster you control and this card; banish both that target and this card, then draw 2 cards.
● You can target 1 card in your GY; banish both this card and 1 card from your hand, then place that target on top of the Deck.
Rulings
- The ① effect can activate and resolve while "Skill Drain" is applying.
- The ② effect can target a token monster. (in which case you still draw, and the token is destroyed).
- If the ② effect is activated, the other target must be face-up to be banished. (This card doesn’t need to stay face-up to be banished. If either isn’t banished, none are banished; no cards are drawn).
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.