The only snare wizards have that could land is the ground-target snare; anything else would not circumvent the pc check. Shadowknights also have a 35% snare that lands on everything. However, if this raid is giving you troubles snare is not going to be your major concern as it will not alleviate any damage a tank is going to receive kiting it. The best option) 3 tanks pull the 3 bugs, all 3 bugs are lurched at a pre defined location. The raid choses one to beat down first, tank this one range the others & continue to build aggro. Around 8% call dots and other melee. While range tanking beat down the next bug again until around 8%. Finally, again, while ranging, engage the final bug until 8% at this point make sure all bugs are low. After the next shroom pop is dead, burn the bugs and win.