Location: Warlic's teleportation potion (Combination to this potion is a spoiler) and Guardian Tower Portal.

Triple Challenge
Number of Battles: (Increases as you win)
2 free potions after each Battle!

MONSTER LIST (Each comes in a pack of 3)

• Berserker
• BURP
• Dastardly Gloop
• Demon Cat
• Drakel Caster
• Drakel Enforcer
• Drakel Warrior
• Drakel Water Mage
• Drone (10)
• Dwakel
• Elvish Warrior
• Emerald Slime
• Evil Eye
• Fire Golem
• Fire Knight
• Fire Mantik
• Firezard
• Fumidus
• Ice Knight
• IceSnayl
• Lectro
• Light Vampragon
• Little BURP
• Mantik
• MiniWorm
• Mondrogor (82)
• Moonray
• NinjaZard
• Orc Archer
• Orc Swordsman
• O'Teeny
• Prismix
• Quizzat
• Salamander Hatchling
• Snayl
• Snow Warrior
• Stone Golem
• Swamp Trog
• Szniflip
• Torch Foot
• Tundra Reaver
• Umazen
• Undead Archer
• Undead Ribber (25)
• Vagaran
• Vampire Slayer (30)
• Velociraider
• Worm Knight
• Zzott

Source

Suikoman444, http://forums2.battleon.com/f/tm.asp?m=3722733