Summon Naturia Pumpkin when your opponent has a monster in the field, its effect will activate which lets you summon a Naturia monster from your hand. You can then Special Summon Naturia Stag Beetle since it has a pretty good attack when special summoned and it has a good effect. Due to the activation of Naturia Pumpkin's effect, Naturia Hydrangea's effect activates which is you can Special Summon it from your hand. This makes you have 3 monsters in the field in 1 turn.
No one should be able to summon 3 monsters on turn 2 that have 2.8k atk. stupid
Summon Naturia Pumpkin when your opponent has exactly one monster on his field, then special summon Naturia Stag Beetle, then special summon Naturia Hydrangea, econ-take his monster, OTK if your opponent doesn't have any protection