Number 50: Blackship of Corn

Level 4 DARK/Plant Xyz Effect
2100 ATK / 1500 DEF

2 Level 4 monsters
Once per turn: You can detach 1 Xyz Material from this card, then target 1 face-up monster your opponent controls with ATK less than or equal to this card's; send it to the Graveyard, and if you do, inflict 1000 damage to your opponent. This card cannot attack the turn you activate this effect.

Rulings – Yugipedia

Printings:

Yu-Gi-Oh! ZEXAL Volume 2 promotional card: YZ02-EN001 (Ultra Rare) - 2012-12-04
2013 Collectible Tins Wave 2: CT10-EN018 (Super Rare) - 2013-11-22

Prices:

Cardmarket: 3.03 €
TCGplayer: $ 3.26