Catalyst Field
Each turn, 1 Level 5 or higher Gemini monster you Normal Summon can be Summoned without Tributing. During your Main Phase, you can Normal Summon 1 Gemini monster in addition to your Normal Summon/Set. (You can only gain this effect once per turn.) Once per turn: You can target 1 card your opponent controls; banish 1 Gemini monster you control, that is treated as an Effect Monster and has gained its effects, until your opponent's End Phase, and if you do, destroy that card.