chandra phoenix is a bad creature,comparing phoenyx to sulfuric vortex is bad , sulfuric is an enchantment and they are really hard to remove , compared to creatures, that are easily exiled by the premier removal spell :sword to plowshares, so the phoenix is never coming back again because it will removed, also it doesnt prevent life gain , thats the real power of sulfuric vortex , preventing opposing jittes and batterskull is absolutely powerful...