Whichever option you go for, Vishgraz scales up accordingly, meaning it wont be long before it doesnt even need toxic to wipe out your opponents in a handful of hits
Rogue's Passage is good to make sure you get Brago past your opponents blockers
Dulcet Sirens and Scrapper Champion are particular favorites of mine, but the best of the lot is surely Titania, Protector of Argoth
Ultimately, this is a pretty cheap way to get up to doubling your attack triggers, but ends up more limited than Windcrag Siege or Isshin as its only for creatures
Goblin Warchief, Goblin Piledriver, and Goblin Ringleader all combined to make a deck that ran on hasty creatures that all built off each other
If you didnt block, they could unmorph into something that punished you when it connected