As the blog post explains, these cards were just getting played too much, and controlling the rest of the meta right now, as everyone else has to play around them
It is a 2/2 Legendary Merfolk Wizard creature that costs 1 blue, 1 green and 2 generic with the following abilities: Ward 2 If one or more tokens would be created under your control, twice that many of those tokens are created instead This is a really neat card
You can follow him on Twitter @LeBlancWes.
Teferi, Hero of Dominaria Absolutely not Teferi kind of disappeared from a lot of players' minds for a long time
The last returning mechanic, Adventures, will arrive slightly different because these new cards will carry off-colour Adventure sides - including at least one multi-colour cost
Niv-Mizzet, Parun Niv-Mizzet, Parun does what Izzet likes most: It rewards you for playing instants and sorceries, or drawing extra cards, making it one of the best Izzet commanders and spellslinger commander, on top of featuring in Izzet's most powerful combo