Ulalek, Fused Atrocity Five is a very reasonable cost for an eldrazi
You can also get one more card every turn, especially in decks that can manipulate the top card of their libraries
Table of Contents Tarkir: Dragonstorm has set a high bar
For example, when we build a Panharmonicon deck, we want nearly every creature in our deck to have an enters-the-battlefield triggerthe cost of skipping Turn 4 to play Panharmonicon is so high that we need it to be absurdly powerful to be worth the investment
One Drops really scratch that mono red itch for me cuz I just love jamming red deck wins to get the win rate up when that deck is in the meta
You will open one common/uncommon The List card every box (very likely, anyway) and even have a shot at two of them in your 36 packs, but goodness, the rares are rare indeed