Add in cards like Grave Pact that either punish your opponent or benefit you whenever you sacrifice Creatures, and youve got a decent gameplan
Since myr use their activated abilities on the regular, Dazzling Theater, Anzrag, the Quake-Mole, and Veteran Beastrider give you lots of opportunity to get additional activations out of them
As long as youre dealing that damage, youre gaining either forced sacrifices or tokens
The purpose of this is to refill an opponents hand to 7 if they have played any cards, or to put you out of any danger of decking and give you position of basically unbeatable strength if anything should go awry
(If you dont find at least one of those in your top four in Green, something has probably gone horribly wrong.) Her second ability is very reminiscent of Freyalise, Llanowars Fury, who itself was on a similar list for C14