Like most Magic: The Gathering cards, the value of Gather the Pack depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Magic Origins)
You can also protect your creatures from board-wipes with Rootborn Defenses, and the deck includes a surprising amount of card-draw, so you can rebuild after a Wrath
What competitive formats is Imp's Mischief played in
But sometimes you want to be able to wipe the field of monsters instead
Some even toss them back into the library
C Common Junk Destroyer X EARTH Level 8 [ WarriorSynchroEffect ] ATK 2600 DEF 2500 "Junk Synchron" + 1 or more non-Tuner monsters When this card is Synchro Summoned: You can target cards on the field, up to the number of non-Tuner monsters used for the Synchro Summon of this card