Hope I don't need to be in a dorm before I post here...
Anyway, here's a way to have Kristya out very quickly while clearing our opponent's field!
You need to get Agents Earth and Venus on the field. Whether you summon Earth, search Venus then summon her next turn, or summon Venus then special summon Earth somehow, it doesn't matter get them on the field together. That's the flexible parts, here's the actual combo:
Use Venus' effect 3 times and summon 3 shine balls. Overlay 2 of your balls to summon Gachi Gachi Gantetsu. use Earth, Venus and our remaining ball to synchro summon Black Rose Dragon and Nuke the field, detatching one of Gachi's balls to prevent his destruction. You now have four fairies in grave (Earth, Venus and 2 balls) so special summon Kristya. Return Earth, since Venus is only a small beatstick since you can't use her effect anyway. Besides, you get to search another one if you want next turn, and you have a 3000 ATK kristya on the field thanks to Gachi's boost, so all you need to worry about now is protecting Krystia.
Anyway, here's a way to have Kristya out very quickly while clearing our opponent's field!
You need to get Agents Earth and Venus on the field. Whether you summon Earth, search Venus then summon her next turn, or summon Venus then special summon Earth somehow, it doesn't matter get them on the field together. That's the flexible parts, here's the actual combo:
Use Venus' effect 3 times and summon 3 shine balls. Overlay 2 of your balls to summon Gachi Gachi Gantetsu. use Earth, Venus and our remaining ball to synchro summon Black Rose Dragon and Nuke the field, detatching one of Gachi's balls to prevent his destruction. You now have four fairies in grave (Earth, Venus and 2 balls) so special summon Kristya. Return Earth, since Venus is only a small beatstick since you can't use her effect anyway. Besides, you get to search another one if you want next turn, and you have a 3000 ATK kristya on the field thanks to Gachi's boost, so all you need to worry about now is protecting Krystia.