You don't wanna spend too many resources on a champ and not kill it, just to have you opponent sac it. So it is definitely a spell to be aware of.
Arthropod Frenzy is a classic sleeper. Never seen it run. Have run it x2 in my spiders deck to MENTAL effect.
The mobo post cracked me up, because it was very true. This is a very good guide for players starting out, well done.
