Playing RT, this morning, I used a deck with one creature and Killer Instinct (the rest are token creatures).
After a few rounds, I noticed that no new creature was being summoned but at the end of every round my reinforcements were still being “eaten”.
Is this a library issue or a bug with the card, itself?
Do you recall if Killer Instinct was correctly fetching and adding your creature to the battlefield for the first few activations or if it didn’t seem to do so at all?
FWIW, I have seen KI summon but not destroy a creature or reinforcement intermittently. It’s very unpredictable and hard to document because the Log says its EOT trigger happened even when nothing happened.