Evilswarm Castor

Level 4 DARK/Warrior Effect Monster
1750 ATK / 550 DEF

During the turn this card was Normal Summoned, you can Normal Summon 1 "lswarm" monster in addition to your Normal Summon/Set. (You can only gain this effect once per turn.)

Rulings – Yugipedia

Printings:

Duel Terminal 7b: DT07-EN072 (Duel Terminal Rare Parallel Rare) - 2013-02-01
Hidden Arsenal 7: Knight of Stars: HA07-EN048 (Super Rare) - 2013-04-26

Prices:

Cardmarket: 0.55 €
TCGplayer: $ 1.00