Since you can just bring this Miku, Child of Song, back after she has been killed as per Commander rules, you can make use of its ability again as many times as you like, with the only caveat being a simple increase in mana cost to bring her back each time
This card is nice in EDH decks that have discard incentives, like Tergrid, God of Fright, or in decks that profit from opponents losing life each turn
Can I make this deck better
What Packs of Lord of the Rings: Tales of Middle-earth Are Nazgl Found in
For starters, the two life loss is very manageable
Assemble the Players Assemble the Players was designed with disguise/morph in mind, but its versatile in any deck with small creatures