If you draw yourself, you stop being a card, but you don't immediately draw another card to replace yourself
The Legendary Praetor works well with Planeswalkers, Sagas, and Creatures which are widely used in Commander, allowing you to get ahead on the board while your opponents struggle
There are plenty of creature-based strategies to choose from, or tons of combos to build around to maximize the chaos Goblins bring to the table
Land/Mana Ramp Arcane Signet Gruul Signet Birds of Paradise Elvish Mystic Delighted Halfling Fyndhorn Elves Llanowar Elves Goblin Anarchomancer Cultivate Kodamas Reach Ruby, Daring Tracker The average deck has an eye-popping number of one-mana creatures, like Birds of Paradise, which makes it much more vulnerable to creature sweeper spells than Im comfortable with
This is a pretty strong card, and somewhat obscure given the March of the Machine: The Aftermath set it came from