YuGiOh: Blade Knight

Yu-Gi-Oh Card: Blade Knight
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Blade Knight
Type:Effect Monster
Text:While you have 1 or fewer cards in your hand, this card gains 400 ATK. If this is the only monster you control, negate the effects of Flip Effect Monsters it destroys by battle.
Printings: 2004 Collectors Tins (CT1-EN002) - 2004-09-01
Dark Beginnings 2 (DB2-EN034) - 2005-07-27
Champion Pack: Game 6 (CP06-EN007) - 2008-05-12
Duelist League 2010 Prize Cards (DL09-EN007) - 2010-06-12
Starter Deck: Dawn of the Xyz (YS11-EN014) - 2011-07-12
Starter Deck: Kaiba Reloaded (YSKR-EN018) - 2013-12-06
Battle Pack 2: War of the Giants Round 2 (BPW2-EN012) - 2014-01-17
Saber Force Starter Deck (YS15-ENF07) - 2015-05-29
Legendary Decks II: Kaiba's Deck (LDK2-ENK13) - 2016-10-07
Speed Duel: Attack from the Deep (SBAD-EN006) - 2019-05-30