Long a staple of older formats, mono red goblins didnt have anywhere near enough juice to compete since cards like Muxus, Goblin Grandee, or Krenko, Mob Boss rotated out
What is the T Rarity
Its expensive to get down, and the trick is harder to use than the cheaper Athreos
These creatures would be cards like Loyal Guardian, Aetherwind Basker, End-Raze Forerunners, and Avenger of Zendikar
But a decade later, Wizards would print Protean Hulk, which turned Flash into a Turn 1 win thanks to a convoluted loop of creatures that you can tutor up by using Flash to not just cheat the Protean Hulk into play but immediately sacrifice it, which was oddly an upside due to Protean Hulk's death trigger
Kalamax, the Stormsire Kalamax, the Stormsires rather restrictive in what it copies, but we can forgive that when we draw an extra five cards off Blue Sun's Zenith