B.E.S. Crystal Core [CRV-EN021] Ultimate Rare Field Spell you can Special Summon this

you can Special Summon this card by Tributing 1 monster

Set: Cyberdark Impact Card type: Counter Trap Rarity: Ultimate Rare Negate the Special Summon of 1 of your opponent''s monsters

Set: World Championship 2011 Card Pack Card type: Normal Monster Rarity: Super Rare Attack: 1500 Defense: 1200

Set: World Championship 2010 Card Pack Card type: Effect Monster Rarity: Rare Attack: 3300 Defense: 1400 Once per turn

destroy that card on the field

B.E.S. Crystal Core [CRV-EN021] Ultimate Rare Field Spell you can Special Summon thisSet: Cybernetic Revolution Card type: Effect Monster Rarity: Ultimate Rare Attack: 2100 Defense: 1000 Put 3 counters on this card when you Normal Summon it. This card is not destroyed as a result of battle. If this card battles a monster, remove 1 counter from this card at the end of the Damage Step. If this card battles without a counter, destroy this card at the end of the Damage Step. Once per turn, during your Main Phase, you can change 1 face up