how many card types mtg Rules Text: Choose a creature type, 95 cards Is Grouping Creature Types Together

So you have to know that the drawbacks are going to make it not-so-comfortable to meld your entire deck to fit the Companion cost

But beware

Made with a soft fabric top to reduce damage to cards during play and a non-slip rubber backing to keep the playmat from shifting during use, playmats enhance the gameplay experience

Take coolingoff breaks, and consider reality checks that remind you how long you have been playing

After all, if you're going to make a huge Hydra that folks are probably going to have to remove at some point, you'd better at least protect it

The deck also rewards you for playing dirty, giving you field advantage as you destroy your opponents' creatures