she's another Simic commander with a special focus on lands, which is something longtime commander players have certainly seen before
Rosa, Steadfast White Mage Mana Value: 3W Rarity: Rare Type: Legendary Creature Human Noble Cleric Stats: 2/3 Card Text: Reach
CARD IMAGE GALLERY See this powerful set in all of its glory with this card-by-card guide
You can play it alongside Elementals to gain some minor advantages, or you can just play up to four copies in your Azorius Control deck
Loser: Izzet Decks 2 Astrologian's Planisphere 1 Cori Mountain Monastery 1 Frostcliff Siege 2 Get Out 4 Into the Flood Maw 6 Island 2 Mountain 4 Multiversal Passage 1 Obliterating Bolt 3 Opt 4 Quantum Riddler 2 Ral, Crackling Wit 4 Riverpyre Verge 1 Roaring Furnace 4 Spirebluff Canal 4 Splash Portal 3 Stock Up 4 Stormchaser's Talent 1 Thundering Falls 3 Thundertrap Trainer 4 Torch the Tower 2 Annul 2 Detect Intrusion 2 Disdainful Stroke 2 Enduring Curiosity 2 Fire Magic 2 Obliterating Bolt 1 Pyroclasm 2 Spell Pierce No longer can Izzet decks exile Vivi Ornitier with Agatha's Soul Cauldron for an explosive burst of mana, nor can they leverage a suite of draw-and-discard creatures through Proft's Eidetic Memory
Whatever the case may be, it seems like they could have allowed it to produce white or blue mana for Planeswalkers as well and not have it busted