Serga Bex, Puppeteer

{b/r},{t}: Activate this ability only any time you
could cast a sorcery. Each player chooses one. If
you control two or more Puppets, instead you
choose for them -
•Sacrifice a creature. Draw cards equal to its
power.
•Discard a card at random. Create an X/X black
Puppet creature token, where X is the converted
mana cost of the discarded card.