Select the Go Berserk Challenge, then Follow these steps:
1. Play Mossbridge Troll for 7 mana, 2 mana remaining
2. Play Quirion Ranger for 1 mana, 1 mana remaining
3. Using Mossbridge Troll's ability, tap Multani, Maro-Sorcerer and Heedless One. Mossbridge Troll is now at 25/25.
4. Using Mossbridge Troll's ability, tap Primalcrux. Mossbridge Troll is now at 45/45.
5. Play your Forest. 2 mana remaining.
6. Play Khalni Hydra. 2 mana still remaining.
7. Play Instill Energy on Mossbridge Troll. 1 mana remaining.
8. Using Mossbridge Troll's ability, tap Drove of Elves. Mossbridge Troll is at 65/65.
9. Using Mossbridge Troll's ability, tap Dungrover Elder. Mossbridge Troll is at 85/85.
10. Using Quirion Ranger's abilty, untap Primalcrux or Drove of Elves. Return any tapped Forest.
11. Using Mossbridge Troll's ability, tap which ever creature you untapped from #10. Mossbridge Troll is now at 105/105.
12. Cast Berserk on Mossbridge Troll. Mossbridge Troll is now at 210/105. 0 mana remaining.
13. Press Y to continue.
14. The AI will tap Mossbridge Troll, Quirion Ranger, Khalni Hydra and Baloth Woodcrasher. The enemy will use all 4 of the Trip Noose cards that it has.
Very important: While the 4th Trip Noose is tapping Quirion Ranger, press X to pause the game
15. Activate Instill Energy's ability to untap Mossbridge Troll.
16. Attack with Mossbridge Troll for 210 damage.