seven wonders card sleeves 7 (Second Edition) Sleeve Kit Premium Sleeves Prime Sleeves - 7 Wonders

(2) During the Main Phase (Quick Effect): You can remove 1 counter from this card, then activate 1 of these effects

It does, however, mention vanilla creatures, or creatures with no abilities, and Bears excel at being boring, bumbling 2/2 tokens with no other text to speak of

[1] Activate 1 of the following effects, also you cannot Special Summon monsters from the Extra Deck for the rest of the turn, except Synchro monsters

Mix in lots of little cantrips with some big spells, and you can basically guarantee a never-ending action queue of incoming threats that your opponents will have a nightmare of a time keeping track of