Black Lion.dek

Monster: 18
Beast Defender x 2
Black Little Lion, Julque x 3
Blacknight of Beastly Skills, Daemoins x 3
Darknight of Shadow Arts, Heras x 3
Eternal Guide x 2
Nimble Hamster x 3
War-Lion General Gabelion x 2

Spell: 11
Geantrai x2
Refueling x 1
Support Recharge x 1
Sword of Time x 3
Trading Places x 2
Trap-Setting Dud x 2

Trap: 11
Gift from Diabolus x 1
Hostile Negotiation x 2
Isis's Last Wish x 2
TC of Armor Leprosy x 2
TC of Facetwisting x 2
Twister of rejection x 2

Extra:15
Bonecrusher Beetle x 1
Deepsea Athlantal Guide x 2
Dark Doom Dragon x 1
Ghora End Dragon x 1
Gravity Guardian x 1
Heavenly Great beast Andolus x 1
Herald of the Moon x 1
RT-67 Gadgetron x 1
Skyterror Necro-Dragon x 1
Starshot Cannon x 1
Tenebrous Lion, Black Axar x 3
Volcana the Dark Flame x 1

Geantrai looks like a cool tech here.

Unsure of the usefulness of Support Recharge (with eternal guide and war-lion, etc.) You may want to replace it with depraved extortion. It would count as another spell for Geantrai anyway.