Might is probably a duplicate but I'm not sure where the right place to post it is:

The AI chose to sacrifice it's smallest creature to a sacrifice prompt instead of one tapped down with Eternity Snare. It's a combo of "AI chooses sacrifice fodder badly" and "AI doesn't understand the concept of removal auras".

Would putting together a list of all removal auras I can find help in resolving this issue eventually? I really don't want to spam them one by one and get every report flagged as "duplicate", but I can't find the appropriate place to stack them as they come. Please don't just flag it as "duplicate" as I run into this stuff all the time and have no clue what to do with it.