Worms

Saw Worm-Light Stun Beat in Shriek.

If your opponent opens the game, and you go second, you can summon Worm Xex and drop Yagan to the grave.

Special "set" Yagan on your field, and flip it up for a Compulsory Evacuating Machine effect. In this case, you have gained +1 in terms of field and card presence, and a -1 for your opponent's field presence. Which means you +1 again, so overall +2.

They are fuel for Brave Wanderer Freed. Cool. Japan is coming up with many qwirky interesting decks. eg: Falcon Control.

Now, on topic, Snowman Eater is a good/consistent card this format.
1900 attack is big, and its a -1. With such a big attack, it may even cost your opponent a card just to get rid of it. Or it forces BF players to waste a Kalut, and Light players to drop Honest. Then they lose a card from Snowman's effect. Nice.

Being water and level 3 fits perfectly into Debris Hero. Sync Debris into Eater for Gungnir/ Black Rose and then Miracle Fusion a Zero or a Shining/ Tornado. Nice. Explosive.

New tech card for Worlds: Compulsory Evacuation Device!

It ruins Infernity, fucks Stardust, ruins opponents play, slows Black Feathers and pisses people off.

Second tech card that may be possible: Karma Cut
It rapes Stardust and removes any face up monster you wanyt. The discard effect might prove useful, in the right deck. Best of all, you don't have to see Machina Fortress again.

I can see it replacing Raigeki Break in Junk and Debris. Optimum number: 2 Karma Cut, 1 Raigeki Break, or 1 Karma Cut, 2 Raigeki Break, or 1 Cut 1 Break.