R'ndulok, Uninvited Nightmare

(Transforms from Randell, Handsome Guest)
When this creature transforms into R'ndulok,
Uninvited Nightmare, you may sacrifice any
number of creatures. If you do, create that many
1/2 colorless Eldrazi Minion creature tokens.
Creature tokens you control have poisonous 2.
(Whenever it deals combat damage to a player, that
player gets two poison counters. A player with ten
or more poison counters loses the game.)