So let's first break down the new mechanics of the set starting with my favorite annhilator
Annhilator is basically a wrath of god like mechanic for any and all permanents, if a eldrazi has annhilator 1, it means before anything else is done, your opponent has to remove either a land permanent or monster spell of the board before the blocking step can be declared.
For example if ulamog's crusher attacks it's annhilator would kick in taking out 2 permanents of your opponent's choosing BEFORE the blocker step can be declared, so nothing can be done about annhilator unless you remove the attacking creature of the field before the battle step begins, I believe this will be a unique mechanic we may see again in future sets if all goes well for this.
The next mechanic is rebound, Rebound is basically you exile the spell after casting, then you can play it again for free on your next upkeep which is always the first phase of the turn, so let's say you play staggershock which is a 2 colorless cost plus a one red cost card, it has rebound you use it's effect and it's remove from the game to the exile pile unless it gets countered, that is the only thing that stops rebound is counterspell, mono red burn loves this ability now, any red deck loves this ability for a fact since it's so versatile.
Now let's move onto the newest creature type level up monsters, each monster with a level up type thing will always have 3 different power/toughness ratios written on them, a prime example is Kargan Dragonlord it has a 2 cost which is 2 red, but it's level up cost is 1 red mana per turn, which can only be played as a sorcery, during your turn, no one else's, each ability differs as it levels, some have trample, some produce tokens, some even produce mana, it all depends on your deck type, so i leave that to the player to decide.
Now i want to discuss the eldrazi themselves, each is massively overpowered, each one is ridiculous in casting costs, though there are ways around them such as Polymorph or some other extremely overpowered card to cast these big boys of the zendikar plane, some even have when you cast abilities, such as Kozilek Butcher of Truth when it is cast you draw four cards immediately no matter if it is countered, this is a unique kind of thing, even for monsters of this caliber. There is also some unique abilites for various eldrazi including taking another turn after your regular turn, etc, so this will provide a unique feel and has already proven some interesting results as seen here
A type 1 legacy deck featuring the biggest eldrazi emrakul, the aeons torn coming from a card called eureka which brings it into play rather easily if i do say so myself, it also has some other card called Progenitus or something or other, but that's another older set if i do say so myself,
The decklist i am talking about is above and it is a unique build which seems like it can bring eldrazi out as early as turn 3, but let's get back to the set itself, again there is 2 new planeswalkers for this set, Gideon Jura and Sarkhan the Mad, both with way overpowered abilites like Jace from Worldwake, since most of that set was small, this set features 248 unique cards with 20 of them being land, the standard 40 rares, 13 mythics and some other things like commons and uncommons, some junk rares and some good rares but overall another interesting closer set for yet another yearly block of cards
Overall i rate this set a 8.3 out of 10 only due to the fact the eldrazi bring this set's power level to match the first set of this block zendikar, with it's sac lands, wicked planeswalkers and unique rares along with some excellent mythic rares.
