a Spell/Trap card in the monster card zone and vice versa = mindblown

|Trading Places|???|????|Spell Card|Spell|||||Pay 500 Life Points: Your opponent Set 1 monster they control in their Spell & Trap Card Zone as a Spell Card and Set 1 Spell/Trap Card they control in their Monster Card Zone in Defense Position as a monster (Level 1/ATK 0/DEF 0).

|Magical Prison|???|????|Trap Card|Trap||||When an opponent's monster declare an attack: Target the attacking monster; Set that target in their Spell & Trap Card Zone as a Spell Card and they draw 1 card.|

|Spell Slot Creator|???|????|Spellcaster/Effect|Earth|2||900|100|You can Tribute this card: Set 1 random card from your opponent's hand in their Spell & Trap Card Zone. If the Set card that was set by this card's effect activates, during your next Standby Phase: You can Special Summon this card from your Graveyard. You cannot activate this effect if you control a face-up "Spell Slot Creator".|

|Magic Mechanism Fist Giganto|???|????|Machine/Effect|Earth|4|1700|1400|When this card declare an attack; Gain 300 Life Points for each Spell/Trap Cards in the Spell & Trap Card Zones. When this card is destroyed; Set this card in your Spell & Trap Card Zone instead of sending it to the Graveyard.|

|Safelock Decoder|???|????|Spellcaster/Effect|Earth|3||1300|800|Once per turn: You can Pay 500 Life Points; Reveal 1 Set card in your opponent's Spell & Trap Card Zone. If the Revealed card is a Monster Card: Special Summon it to your Side of the field, otherwise, Set it.|