Your search for "Emperor Sem RGBT-EN099" revealed the following:
Emperor Sem - RGBT-EN099 - Rare - 1st Edition from Raging Battle 1st Edition, available at 401 Games Canada. Rarity: Rare Card Text:While you control this face-up card, when you successfully Tribute Summon a monster, both players may select 1...
Emperor Sem - RGBT-EN099 - Rare - Unlimited from Raging Battle Unlimited, available at 401 Games Canada. Rarity: Rare Card Text:While you control this face-up card, when you successfully Tribute Summon a monster, both players may select 1 card in...