Shredder, Shadow Master will only cost you a dollar or two, but in pairing with a card from Lost Caverns of Ixalan, you can win a match in one fell swoop - quite literally
A creature that's removed from combat stops being an attacking, blocking, blocked, and/or unblocked creature
That means if you cant usefully keyword the card because you cant really make a lot of interesting cards with it, you have to use the space you have, and make decisions about what makes the card the best thing for the purpose you have
Then, creatures with -1/-1 counters on them cant block
Baylen can turn your tokens into near endless mana, buff himself up to deal lethal damage, and draw you as many additional cards as you need
Uzra, Chief Artificer will head up the set's Esper (White/Blue/Black) Commander deck