The Field Spell Cards likely represent the settings the player will encounter throughout the game
There have been many playstyles and archetypes through the years, and some were by far the strongest Deck in their format
Shamarun Cloner [DARK] LV 3/Reptile/Effect ATK/600 DEF/1400 During the Main Phase: If this card is in your GY, you can Special Summon this card from your GY to your opponent side of the field, and if you do, Special Summon up to 3 Shadslime Token to your side (DARK/Reptile/LV 2/ATK 0/DEF 100), also, if this card leave the field after used this effect, banish instead
Introducing Doomsleeves - the ultimate accessory for your Doomlings card game
At least that doesn't affect its usefulness
Finally, Lulus Lyrilusc strategy from Yu-Gi-Oh