REDU format ruling
Snatch Steal

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Equip only to a monster your opponent controls. Take control of the equipped monster. During each of your opponent's Standby Phases: They gain 1000 Life Points.
Rulings
- Your cannot select your opponent's face-down monster.
- If you equip your opponent's monster with Snatch Steal, and later your opponent equips the same monster with Snatch Steal, your opponent gains control of the monster.
- If you control your opponent's monster with Snatch Steal and your opponent takes control of it with Brain Control, the monster is returned to you during the End Phase.
- If you control your opponent's monster with Snatch Steal and your opponent takes control of it with Brain Control, if Snatch Steal is removed from the field your opponent keeps the monster. It does not return to you during the End Phase.
- If you control your opponent's monster with Snatch Steal and Giant Trunade returns Snatch Steal to its owner's hand, the equipped monster is returned to its owner.
- If you control your opponent's monster with Snatch Steal and it is flipped face-down while you control it, the monster remains under your control and does not return to your opponent, even if it is flipped face-up.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.