Dies to Removal

Are these builds viable without Mutavault? I can't afford them at the moment.

Crap. Got a Whip of Erebos, Arbor Colossus, Temple of Triumph, Fabled Hero, and Reverent Hunter. My opponent from the mirror match pulled Elspeth, and Stormbreath Dragon.

[deck] Creatures (28) 4 Firedrinker Satyr 4 Rakdos Cackler 4 Ash Zealot 4 Firefist Striker 2 Rakdos Shred-Freak 4 Chandra's Phoenix 2 Boros Reckoner 4 Fanatic of Mogis Burn (10) 4 Lightning Strike 4 Magma Jet 2 Shock Land 22 Mountain Sideboard 3 Skullcracks 1 Hammer of Purphoros 3 Act of Treason 3 F...

Just discovered this board yesterday from a link on the MTGSalvation forums. I played Magic a very long time ago, 1996 - 2000, but had to quit due to financial/time/family reasons. Played a little when Kamigawa came out, but had to quit again for the same reasons. Starting playing on MTGO about a ye...