pokemon ruby and sapphire booster box EX & Pokémon sold separately) to unlock additional functions. 2003 Pokemon Card Game (TCG)

So, while you could get your main strategy going quicker, it also makes your strategies less varied, and that just gives Pokemon TCG Live the win

It is especially interesting for ".5" expansions (mini sets) that do not always have a dedicated booster box

Instant Protection (CTRL to add secondary) Pump Aurelia, Exemplar of Justice Flying Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) At the beginning of combat on your turn, choose up to one target creature you control

Bears are widely used in the rules examples, when you need a simple creature without abilities