MP24-EN148 – Theia, the Primal Being (Prismatic Secret Rare)
Level 11 DARK Rock Effect Monster
ATK/3000 DEF/600
During the Main Phase (Quick Effect): You can Tribute monsters whose total Levels equal 11 or more; Special Summon this card from your hand, then if you control no other monsters, you can destroy 1 monster on the field with the highest ATK (your choice, if tied). You can only use this effect of “Theia, the Primal Being” once per turn. Neither player can Normal and/or Special Summon more than 4 times per turn while this card is face-up in the Monster Zone.

MP24-EN149 – Mind Castlin (Prismatic Secret Rare)
Level 6 DARK Psychic Effect Monster
ATK/1500 DEF/2600
1 Tuner + 1+non-Tuner monster
You can target 1 face-up monster your opponent controls; switch control of that monster and this card. If this Synchro Summoned card is sent to the GY: You can target 1 face-up monster on each field; switch control of those monsters. You can only use each effect of “Mind Castlin” once per turn.

MP24-EN150 Heavy Polymerization (Prismatic Secret Rare)
Normal Spell Card
Fusion Summon 1 Fusion Monster from your Extra Deck, using 3 or more monsters from your hand or field as material. You can also banish monsters from your Extra Deck as material, up to the number of monsters your opponent controls, but you lose LP equal to the total ATK of monsters banished this way, when the monster is Fusion Summoned.

Source: Content Creator Openings