You can combine this card with "Turbo Synchron", which can switch your opponent's monster to defense mode. With this card's Gemini effect, you can then attack monsters with weaker defense stats to activate this card's second effect.
Your opponent may try to attack this card with two monsters. Counter with "Gemini Trap Hole". Also, equip this card with "Gemini Booster" so that when your opponent destroys this card, you can Gemini Summon one of the monsters you summoned with this card's effect.
If you don't mind the life-point hit, a good opening move is to summon "Gemini Soldier" in attack position, while setting "Ultimate Offering". If your opponent attacks, you can flip up "Ultimate Offering" and Second Summon "Gemini Soldier" during their battle phase, to quickly get out any Gemini from your deck.