Seto Kaiba
Skill Card
Flip this card over when you activate this Skill.

Dragon Caller
Kaiba / Skill
Once per Duel, you can use 1 of the following Skills.
• If you successfully Normal Summon “Lord of D.”, add 1 “The Flute of Summoning Dragon” from your Deck or GY to your hand.
• Reveal “The Flute of Summoning Dragon” from your hand, then add 1 “Lord of D.” from your Deck or GY to your hand.

Source