yugioh dragon summoning cards Secreterion | How to obtain, Decks & Tournament Usage Statistics From the Elemental Energy set Dragon Dowser [YS16-EN019] Common

Mega Slowbro's shell kind of looks like it is ment to spin and create a whirlpool vortex

Bystial Druiswurm Bystial Druiswurm Dragon Effect UR Ultra Rare STAR Starlight Rare PSE Prismatic Secret Rare SR Super Rare Related Cards View as Gallery View as List Branded Beast X TRAP Continuous Once per turn, during the Main Phase, if you control a "Bystial" monster: You can Tribute 1 Dragon monster, then target 1 card your opponent controls

They also tend to come with 36 booster packs, so Booster Boxes allow you to buy a lot of packs in one go

Lurrus is obviously a very good card, especially with Ghitu Lavarunner and Viashino Pyromancer, because it means you can get an effect immediately when you cast it