Flash Liberator, Urza's Battlethopter, Leyline of Anticipation, Vedalken Orrery, Vivien, Champion of the Wilds, and Skittering Cicada fill this slot
Bitterblossom by Rebecca Guay Bitterblossom | Illustration by Rebecca Guay Bitterblossom evokes everything I love about Rebecca Guays art
But here's a mana rock that makes the cut: Midnight Clock is the uncommon case of a colored mana rock that provides ramp to blue, and that if timed properly can put you way ahead on cards
Its hard to go overboard on them short of making them an actual, instant win, but theyre also pretty rare
If you have enough mana and primarily instants, you can set up a turn where you can sacrifice Festival of Embers while your spells are on the stack, therefore circumventing losing them when recasting them
Youd happily pay the extra mana to tack on all of Stoneforge Mystics benefits: this Kor artificer is a body on board, and an activated ability that can cheat equipment into play