Plantera MK2 is a fully-metalized re-color of Plantera
She has one stage that gets harder as she loses HP
HP-50,000-Plantera MK2, 1,000-mini-plantera
Defense-50-Planter MK2, 20-mini-plantera
Attack-60-Melee, 55-seed, 65-poison seed, 85-thorn ball, 115-mini-planteras
Spawn-Break a Metal Bulb in the Jungle with a Pickaxe/Drill of 190% Pick power or higher
Inflicts-Poison-75%, Venom-50% (both)
Immune-Poison, Venom, Confused, Obstructed (both)
She will follow the player slowly (much like regular Plantera), and shoot thorn balls, seeds, and poison seeds. When she gets down to 10,000 HP, she will open her armor/bulb occaisonly to lay a baby plantera egg, which has 200 HP and 10 defense, which will then hatch, and follow an attack pattern to Plantera.
Run around her with a good ranged/melee (that can shoot projectiles)/mage weapon (melee-Ice Sickle, ranged-megashark/flamethrower, mage-rainbow rod/magical harp) and simply spam the weapon (and potions) as needed.
2 of the "one of the following will be dropped" on regular Plantera
Flower Burst 50%