The card quote is about enemies teaching you more than friends
Ishgard, the Holy See is always worth including in a white deck, even with only a couple of available targets for the spell, but it gets more desirable the more invested you are in artifacts and/or enchantments
Chandra, Acolyte of Flame can come down and either provide you with a couple of hasty attackers as a way to help take down opposing walkers or let you re-cast one of your key early game spells
On its own, The Meathook Massacre is good but not overwhelmingly powerful
Fist of Suns and Jodah, Archmage Eternal Each of these is very good at getting you to alternate cast something for five mana
The next turn, use Titanic Growth or our other pump spells to grow its power up to at least five