mtg burn deck commander Imodane, the Pyrohammer SPELLS Wilds of Eldraine WOE Magic Custom Fire Lord Azula (Commander) -

Elvish Archdruid Much like Priest of Titania and Circle of Dreams Druid, this Elf lord features an impressively powerful mana-ramping ability that looks at the number of Elves you have in play and then produces green mana equal to that number

Burn spells can be great in various situations

With that in mind, a scalable Annihilator ability seems kind of ridiculous when you consider how many +1/+1 counter abilities are already played

Similarly, if you sacrifice a creature to activate a mana ability while activating Heirloom Epic's ability, that creature won't be on the battlefield when you pay the ability's activation cost, so you won't be able to tap that creature rather than pay one of the mana in the activation cost