For example, you can't sacrifice a Food token to activate its own ability and also to activate Bosco, Just a Bear's ability
When this creature dies, create a 1/1 green and white Citizen creature token for each +1/+1 counter on it
Then, it takes two of your opponent's characters out of the game for a bit, exerting them and not letting them exert on their owners next turn
Note that a lot of planeswalkers (read: Black) have loyalty abilities involving sacrificing creatures, so this makes a good piece of fodder to chuck to that
Keep that thing away from me
Because it reads your linked collection, Augur can recommend upgrades you already own, suggest cards within your budget, and add, remove, or swap printings just by asking