Since it can bounce itself each time, you net as many cards as you'd like to draw
For my personal Sram, Senior Edificer deck, my deck's goal is to put down Sram, put down one of these discount dorks, and then start chaining together as many auras as possible, casting Angelic Gift into Chosen by Heliod into Arrest into All That Glitters and so on
Iron Valiant ex has a storied competitive history, primarily due to its Tachyon Bits ability, which allows you to place damage counters on the opponents Pokmon just by moving Iron Valiant into the Active Spot
Yes, zombie decks win at competitive tables
For a more detailed look at Connellys art and method, he was interviewed earlier this year and that chat can be found here
A lot of times, just the threat of making them indestructible is good enough to make opponents let them through, especially with Goreclaw giving a size boost and trample to your larger creatures