Looks like a great budget deck (no fancy lands, etc), and I like -1/-1 counters decks
If you find you have enough draw with the
blood fast, consider replacing
aggressive urge with 3x
nest of scarabs - the 1/1 insects can come in handy to chump block deathtouch attackers or indestructible gods; they can also
catch the counters from some of your crocs while replacing themselves. Fits in budget, too.
Thanks for sharing your idea!