The other reason you might want to throw in the towel now is the sheer time commitment the game asks from you
Kuriboo X DARK Level 1 [ Fiend / Effect ] ATK 300 DEF 200 (This card is always treated as a "Kuriboh" card.) When an opponent's monster declares an attack: You can discard this card
Dark Magician of Destruction X DARK Level 8 [ SpellcasterFusionEffect ] ATK 2800 DEF 2600 "Dark Magician" + 1 LIGHT or DARK monster Must be either Fusion Summoned, or Special Summoned (from your Extra Deck) during the turn a Spell Card or effect is activated, by banishing 1 Level 6 or higher DARK Spellcaster monster you control as material
It also means the creature cant be blocked by creatures of the given color, and enchantments already on the creature will be dispelled
The opponent can also cure Asleep with an anti-Asleep strategy, such as Evolving the Active Pokemon or forcing it to retreat
Shelf timing is unpredictable Even after a shipment arrives at the store, there is a delay before cards appear on the shelf