Whenever one or more Ninjas and/or Rogues you control deal combat damage to a player, create a 1/1 black Rat Rogue creature token
One card, $17.99, free shipping, magnetic case included
Its price has jumped around a lot in the last 12 monthsmost notably, it was worth $4,000 between March and July of 2024 (according to Collectr , which is one of the preferred apps for collectors to use now)
However, you could run Marvo, Deep Operative as the commander instead
I personally can imagine a lot of games totally turned upside down in a memorable way as a Biorhythm resolves and suddenly the game is changed
The one problem with this type of flavor text is that it's sometimes featured on cards that dont reflect such a poetic text all that well