The big difference here is you dont control any permanents to produce mana or sacrifice at the start of a game, whereas the rules let you start with a full grip of seven cards ready to be spent immediately plus another free one each turn
This is notably the Commander Deck version of Teval, not the base set version
Kagha, Shadow Archdruid Kagha, Shadow Archdruid is a prime example of payoff and enabler
As a top-tier Commander combo-enabler for Gobbies, Grumgully is second to none, and it helps that this Goblin Shaman is equally as comfortable leading the charge as your commander as he is nestled amongst the 99 in Gruul decks
Any additional attacks, you will have to buff it up or it will just sit there
Love this enchantment rare duo loads, and they are all about that slow and steady card flow