REDU format ruling
Appropriate

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Activate only when your opponent draws a card(s) outside of either Draw Phase. After that, each time your opponent draws a card(s) outside of either Draw Phase, immediately draw 2 cards.
Rulings
Activate only when your opponent draws a card(s), except during their Draw Phase. Draw 2 cards.
- Appropriate can only be activated if the last effect on the Chain ends with your opponent drawing a card(s) outside of their Draw Phase. (See Missing the Timing - Optional Trigger Effects in the Advanced Gameplay FAQ for more information.)
- If your opponent picks up cards with Morphing Jar #2, etc., you do not draw.
- If you have 2 face-up Appropriate, you will draw 4 cards when your opponent draws a card(s) outside of their Draw Phase.
- If you and your opponent have Appropriate face-up and you or your opponent draw a card outside of your respective Draw Phases, the effect of each Appropriate is applied until you or your opponent cannot Draw a card and lose the Duel or gather all 5 pieces of Exodia into your respective hand and win the Duel. This process does not start a Chain.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.