The Calculator

Monster

Other names: Il Calcolatore (Italian)

The code DEM1-EN012 you looked up matches:

Text

The ATK of this card is the combined Levels of all face-up monsters you control x 300.

€0.14

Cardmarket · lowest across all versions

Unchanged since Nov 7, 2026 · read on Nov 7, 2026

The card’s price, not your copy’s: the free sources do not tell languages or editions apart. For Italian cards the real price may differ.

The history starts on the first day we read the price.

PTDN-EN036Feb 13, 2008
Phantom Darkness · Common
DEM1-EN012Feb 12, 2011
Demo Pack · Common
BP01-EN149May 24, 2012
Battle Pack: Epic Dawn · Common
BP01-EN149May 24, 2012
Battle Pack: Epic Dawn · Starfoil Rare
YS15-ENY11May 28, 2015
2-Player Starter Deck: Yuya & Declan · Common$4.00 · price per set and rarity (USD, from YGOPRODeck)
YS15-ENF12May 29, 2015
Saber Force Starter Deck · Common$1.36 · price per set and rarity (USD, from YGOPRODeck)

Types and rarities are shown as listed by the card database (in English).