REDU format ruling
The Eye of Truth

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Your opponent must keep their hand revealed. Once per turn, during your opponent's Standby Phase, if they have a Spell(s) in their hand: They gain 1000 LP if they have a Spell(s) in their hand at resolution.
Rulings
- When The Eye of Truth is activated in a chain you do not see your opponent’s hand until The Eye of Truth resolves. So if The Eye of Truth is step 3 in a 5 step chain, steps 5 and 4 will resolve, then The Eye of Truth resolves and your opponent reveals his/her hand, then steps 2 and 1 resolve.
- When The Eye of Truth is active and a card such as Robbin’ Goblin requires that the opponent discard a card from their hand randomly, the opponent should hide and shuffle his hand, discard a random card, and then reveal their hand again.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.