Nowadays, you can get a vanilla 3/3 for a measly (looking at you Sundial, Dawn Tyrant)
The addition of fresh mechanics brings unique rules and abilities to enrich gameplay diversity and strategy
b Rui Oliveira (2004-11-21)
There are countless cards that can recur creatures or artifacts in Commander, and you can initiate the loop at instant speed in response to removal, if needed
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
Other cards from the same time period as the Team Rocket set that didnt see an appearance were Owners cards, such as cards that had gym leaders such as Brock and Misty in their name