Adding Harpie Lady 3 to a deck will result in it being unplayable, due to there being ‘an invalid amount’. Happens no matter the gamemode and banlist. Tested on multiple computers, all with the same result.
Can you provide your decklist?
In getting the decklist, I think I’ve figured out what the issue is. All three Harpie Lady 1-3 cards are always treated as Harpie lady, and that went over me and my friend’s head. The error message is a little obtuse, but it makes sense. Can close this, here’s the decklist for posterity.
Monster
1 Lava Golem
3 Fusilier Dragon, the Dual-Mode Beast
2 Chaos Sorcerer
1 Great Maju Garzett
1 Zaborg the Thunder Monarch
2 Shadow Ghoul
1 Double Coston
2 King Tiger Wanghu
1 Molten Zombie
1 Hyper Hammerhead
2 Mad Sword Beast
1 Mystic Tomato
3 Harpie Lady 2
3 Harpie Lady 3
1 Thousand Needles
1 Sangan
1 Soul-Absorbing Bone Tower
2 Dark Mimic LV1
Spell
1 Book of Life
1 Pot of Greed
2 Stray Lambs
1 Harpies’ Hunting Ground
Trap
2 Bottomless Trap Hole
2 Chain Disappearance
2 Compulsory Evacuation Device
2 Gorgon’s Eye
1 Mirror Force
2 Threatening Roar
1 Torrential Tribute
2 Cursed Seal of the Forbidden Spell
2 Judgment of Anubis
1 Magic Drain