• This card is particularly effective against "Shaddoll" Decks, but it can also be useful against "Lightsworn" Decks, due to its second effect, and against any DARK Decks, such as "Infernity" and "Dark World", with its last effect.
  • In a "Constellar" Deck: Special Summon "Constellar Siat" using its own effect. Then, Normal Summon "Constellar Pollux" then Normal Summon "Constellar Kaus". Use the effect of "Kaus" to increase the Levels of "Kaus" and "Pollux" by 1 each. Finally, use the effect of "Siat" to copy the Levels of either "Kaus" or "Pollux", then Xyz Summon this card.
  • If "Darktellarknight Batlamyus" is on the field, "Diamond" can negate any monster effect on the field (also notice that this effect can be used as many times as possible per turn).

Traditional Format


  • Level 5 LIGHT monsters that can be used as Xyz Material:
 Japanese namePrimary typeSecondary typeTypeATKDEF
Airknight Parshath天空騎士パーシアスEffect MonsterFairy19001400
Armades, Keeper of Boundaries幻層の守護者アルマデスSynchro Monster
Effect Monster
Aromaseraphy Rosemaryアロマセラフィ-ローズマリーSynchro Monster
Effect Monster
Artifact Achilleshieldアーティファクト-アキレウスEffect MonsterFairy15002200
Artifact Aegisアーティファクト-アイギスEffect MonsterFairy12002500
Artifact Beagalltachアーティファクト-ベガルタEffect MonsterFairy14002100
Artifact Caduceusアーティファクト-カドケウスEffect MonsterFairy16002400
Artifact Chakramアーティファクト-チャクラムEffect MonsterFairy19002000
Artifact Failnaughtアーティファクト-フェイルノートEffect MonsterFairy20001600
Artifact Labrysアーティファクト-ラブリュスEffect MonsterFairy23001000
... further results (67 more)

 Japanese nameSecondary typeAttributeTypeRankATKDEF
Darktellarknight Batlamyus煉獄の騎士 ヴァトライムスDARKWarrior42600550
Stellarknight Delteros星輝士 デルタテロスLIGHTWarrior425002100
Stellarknight Triverr星輝士 トライヴェールLIGHTWarrior421002500
Tellarknight Ptolemaeus星守の騎士 プトレマイオスLIGHTWarrior45502600