You may have two commanders if one of them is a legendary creature with the choose a background ability and the other is a legendary Background enchantment
Murktide Regent is a major contributor to the types of common graveyard hate played in the format
The MTG release schedule has got way out of hand since I was playing paper Magic, but if this is what we can expect from the 100-ish reprints in Foundations, then this might be the set that finally gets me cracking packs again
Generating a mana advantage easily escalates into dominating a game with the right deck, and its generally used unfairly to Reanimate something nasty on turn 1 or empower a storm deck
Starting with the nasties, we've got Maleficent, Monstrous Dragon
Then, on your opponents turn, Hydro-Man turns into a land, both granting you mana to counter spells and preventing your opponent from removing Hydro-Man with sorcery-speed removal