Darklon

Level 1 DARK/Fiend Effect
100 ATK / 100 DEF

When this card is Normal Summoned: You can have all face-up monsters you currently control gain 1 Level, also, they become DARK (these effects last until the End Phase).

Rulings – Yugipedia

Printings:

Order of Chaos: ORCS-EN002 (Common) - 2012-01-20
Star Pack 2013: SP13-EN014 (Common) - 2013-03-01
Star Pack 2013: SP13-EN014 (Starfoil Rare) - 2013-03-01

Prices:

Cardmarket: 0.06 €
TCGplayer: $ 0.07