It stands out from the rest thanks to a ton of unique digital-only cards that often have random effects, manipulate your deck in ways that you wont be able to otherwise, and the ability to just make cards appear from thin air
It guarantees a hand of 7, which is essentially a much-needed refill for an archetype that can quickly empty its hand
Number 109 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (6/15/2010) Training Grounds won't affect a cost that isn't the cost to activate a creature's activated ability
Even so, some new additions first surfaced here, including early playtest versions of cards like Orcish Artillery, Dragon Whelp, Dwarven Demolition Team, Paralyze, and Lance