Kimahri, Valiant Guardian* Essentially a 4/4 for 4, Kimahris ability to copy your opponents creatures, and tap one down while keeping its vigilance gives him an interesting role to play in some Commander decks
Your options for spells are somewhat limited, so you might need to add some decent removals or counters to better control the game
Your best rat with built-in evasion is Marrow-Gnawer, who also passes the fear mechanic out to every other rat you control
Mind you, Im not a hardcore CCG player, and I dont usually seek these experiences out, but Ive got a few friends who play these games competitively or judge competitions, and I trust their assessment based on the Lorcana starter sets
As of the time of writing, a basic Play Booster is sitting at 5.80 on cardmarket.com and at $9.70 on tcgplayer.com
There currently is too much of a entry barrier to get started in EDHand Magic as a wholeas a brand new player