WithRhox Faithmenderon the board, that single lifegain is doubled, so if your Avatar is a 40/40, you gain 80 life in one swoop, transforming it into a staggering 120/120. Thats not all:Cradle of Vitalityadds 80 +1/+1 counters to a chosen creature, andNykthos Paragongrants 80 +1/+1 counters to your entire army, all because of one massive burst of life
But note the honesty point: lifelink is a source, not a payoff
Overall, Amethyst, Ruby, and Steel are more focused on attacking while Amber, Emerald, and Sapphire are more supportive, but each can be used to make interesting combinations and people can experiment with seeing what strategies work with their personal play style
Ill take it rather strongly in Cube, and hopefully pick up some expendable artifacts for emerge