This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with these effects.● When a Gemini monster is Normal Summoned, except this card: You can make that monster gain 500 ATK and DEF.● If a Gemini monster(s) you control would be destroyed by a card effect, you can destroy 1 other card you control instead.
You can special summon gemini monsters from the graveyard pretty easily. Use Featherizer's effect to send Hydragon to the graveyard, then either use Soul Resurrection at the end of your opponent's turn, or Blazewing Butterfly / Supervise to get it from the graveyard. Bastion's other level up cards: Chemical Beast Hydron Hawk, and Chemical Beast Carbon Crab can also help with special summoning Hydragon.
Some lower level Gemini monsters can have increased attacks on their own, which you can further increase if you have Hydragon with its effect already available. Goggle Golem can be 3100 attack, and Phantom Dragonray Bronto to 3300. Skelesaurus can be good if you use it with Jurassic World, increasing its attack helps destroy monsters so you can take control of it. Use Double Summon to speed up the normal summons.
Treated as a Normal Monster / Your monsters gain ATK / Your monsters gain DEF / Your opponent's monsters gain ATK / Your opponent's monsters gain DEF
Tip: If you summon a gemini monster 2 times, it will get 1000 ATK
Tip2: You can use it to destroy face-down cards. Awesome with Wild Tornado !
Tip3: This card's art is awesome, enough to make your opponent stare is for hours and loose because time's out !