This four drop Golgari colored 3/4 is next with an experience counter trigger for each dork you control dies
Reconnaissance Mission is an enchantment that greatly help us with card draw since we can expect to attack with many Birds and deal many times damage to a player and thus draw many cards from it
$25 Upgrade +1/+1 Counters is a very deep archetype so there's more sweet upgrade options that I could ever hope to cover, but I selected some of my favorites: for protection I've added Bulwark Ox and Mutational Advantage, a bunch of proliferates with Metastatic Evangel and Dreamtide Whale being the two best, ramp got a massive upgrade with Astral Cornucopia / Kami of Whispered Hopes / Purestrain Genestealer / Summon: Fenrir, and so on
Youre going to have a lot of Birds in your graveyard too, especially because of Chocos attack trigger
That Crdan keeps doing it is what really drives up his stock
This means that a card like Ice Magic can trigger either Blizzard (for the regular mana cost), but can also be played for Blizzara, or the even better Blizzaga if you can pay those additional costs