If you can trigger an EtB ability every single turn, the best option in the deck (even better than Karumonix in the right situation!) is the rather unsuspecting Chittering Rats
4 years ago I think you should cut: Brutalizer Exarch, Conduit of Ruin, Frost Titan, Giant Adephage, Myr Battlesphere, Oblivion Sower, Pelakka Wurm, Phyrexian Ingester, Rashmi, Eternities Crafter, Rattleclaw Mystic, Sagu Mauler, Simic Sky Swallower, Sphinx Ambassador, Stalking Vengeance, Tornado Elemental, Plasm Capture, Pandemonium, Sunken Hope, Tezzeret the Seeker, Chromatic Lantern, Darksteel Ingot, Disaster Radius, Explosive Vegetation, Heat Shimmer, Rude Awakening, and Spelltwine
As always, if you have information or experiences that would help me make this more accurate, please reach out in the comments, on Twitter, or on the ProTrader Discord
#146: Legions of Will Did did it just wink at me
If that doesnt appeal, then try trimming most stat-monsters that are stronger than Shaman of the Pack on pure rate, like Lovestruck Beast or Glissa Sunslayer
Instead of creating special trainer cards for each winner, this earlier contest had special Pikachu cards made for each winner, for each level of winner (gold, silver, and bronze)