Blue-Red: Delirium I cant stress enough how similarly these last three color pairs play, or how much overlap there is between the cards they want to prioritize
That's also a cast trigger so if the Eldrazi is countered, it'll still trigger
Slowing a game down to a snail's pace for one's opponents, Winter Orb states that as long as it's untapped, players are only capable of untapping one land per turn
There are a lot of ways to build it, but I think its a good proactive shell with great creatures, removal, and discard, and I think you can cleanly include a reanimation package in such a strategy
This means it can hit your opponent through a Leyline of Sanctity, which is a big deal for Burn decks
When it works you have an incredible time and at worst you just play land drops until you find something fun