Decode Destruction [DUPO-EN016] Ultra Rare

Target 1 "Decode Talker" you control; apply the following effects this turn, depending on the number of monsters it currently points to.
• 1+: That monster gains 500 ATK for each monster it currently points to.
• 2+: Monsters destroyed by battle with that monster are banished after damage calculation.
• 3: 3: After damage calculation, if that monster destroys your opponent's monster by battle: Destroy all cards your opponent controls.
You can only activate 1 "Decode Destruction" per turn.