Formless Genesis produces a token that gets bigger with every land in your graveyard, and that token has deathtouch
Paired with other White options like Archeomancers Map, it prevents its player from ever falling behind the curve
7 Snapcaster Mage An Iconic Creature For Blue Mages First Printed : Innistrad (2011) One of the most iconic Blue cards in Magic: The Gathering , Snapcaster Mage is a two-man 2/1 creature with flash, which has the powerful ability to give an instant or sorcery card in the controlling player's graveyard flashback until the end of the turn, letting them cast it again for its mana cost
While there are a couple places to do this, the centralized spot is the PlayEDH Discord server
K'rrik is notably a 2/2 with lifelink, gaining a +1/+1 counter whenever its owner casts a Black spell, allowing it to mitigate the life-loss that its cost reduction provides
Garnet gives you a lot of flexibility, and its hard to go wrong either way
