Activate 1 of these effects.
● Add 1 "Catalyst Field" from your Deck to your hand.
● Add 1 "Burnout" and 1 "Chemicritter" monster from your Deck to your hand. You can banish this card from your GY, then target 2 face-up monsters you control, including at least 1 Gemini monster that is treated as an Effect Monster and has gained its effects; until the end of this turn, change the ATK of 1 monster to 0, and if you do, the other monster gains ATK equal to the original ATK of the first monster. You can only use each effect of "Dimer Synthesis" once per turn.