Mathematician [RA04-EN223] Quarter Century Secret Rare TG20 you can target 1 face-up

you can target 1 face-up Spell/Trap your opponent controls

Set: HeartGold & SoulSilver: Unleashed Type: Psychic Rarity: Ultra Rare Retreat cost: 0

Go all-in with aggressive units and explosive spells

Set: Base Set Unlimited Type: Grass Rarity: Uncommon Retreat cost: Colorless

Mathematician [RA04-EN223] Quarter Century Secret Rare TG20 you can target 1 face-upSet: Quarter Century Stampede Card type: Effect Monster Rarity: Quarter Century Secret Rare When this card is Normal Summoned: You can send 1 Level 4 or lower monster from your Deck to the GY. When this card is destroyed by battle and sent to the GY: You can draw 1 card.