Her +1 creates two temporary 3/1 Elemental tokens with Haste that can pressure opponents, take down vulnerable Planeswalkers, or feed sacrifice outlets before they disappear
Low-cost characters (Captain Hook, Forceful Duelist and Goons, Maleficent's Underlings) can do much the same thing, running interference as you prepare
Where It Appears Ruby frequently appears on warriors, adventurers, daring heroes, powerful villains, and characters driven by strong emotion
So long as players keep their decks down to a reasonable size, manage the costs of their cards, and have plenty of cards to add to the Inkwell, their decks should be relatively well-balanced
For you, its closer to $3,300
Casting Cost: Card Type: Legendary Creature - Human Noble Cleric Power / Toughness: 2 / 2 Card Text: Lifelink Whenever Garnet attacks, you may remove a lore counter from each of any number of Sagas you control