Amulet of Ambition

Edison Card Text
Equip only to a Normal Monster. If it battles a monster with a higher Level, the equipped monster gains 500 ATK x the difference in Levels ( during that battle only). When this card is sent to the Graveyard, you can return it to the top of the Deck.
Tactical Evolution • 2007-08-15
No targeting
No Damage Step effect
Banlist • Unlimited
Interactions
With Frog the Jam equipped with two Amulets of Ambition and Wetlands active, how does Honest resolve when it attacks into Batteryman?!
Frog the Jam attacks Batteryman AA in the Damage Step with Amulet of Ambition and Wetlands active.
Amulet of Ambition applies at the earliest point in damage calculation, setting Frog's ATK to match the opponent's monster. Honest then boosts the opponent's monster by Frog's original ATK, so Batteryman becomes higher and wins the battle.
Rulings
edisonformat.net
Equip only to a Normal Monster. If it battles a monster with a higher Level, the equipped monster gains 500 ATK x the difference in Levels (during that battle only). When this card is sent to the GY, you can return it to the top of the Deck.
●The increase in ATK is applied only during Damage Calculation.
●This card’s effect to return itself to the top of the Deck starts a Chain.
edisonformat.com
Equip only to a Normal Monster. If it battles a monster with a higher Level, the equipped monster gains 500 ATK x the difference in Levels (during that battle only). When this card is sent to the Graveyard, you can return it to the top of the Deck.
The increase in ATK is applied only during Damage Calculation.
This card’s effect to return itself to the top of the Deck starts a Chain.