mtg standard blue cards Magic The Gathering Control Introductory Deck - Starter Deck - Mono Blue - Modern Legal - Custom Built - If X is 5 or more Blue Sun's Twilight | Phyrexia:

She twisted the blade, and he felt a gush of warm blood release from the gap in the skin

For that reason, the librarian seems pretty good in this deck

Archfiend of Despair Atarka's Command Call In a Professional Erebos, God of the Dead Everlasting Torment Forsaken Wastes Giant Cindermaw Grievous Wound Grma Wormtongue Havoc Festival Knight of Dusk's Shadow Leyline of Punishment Quakebringer Rampaging Ferocidon Roiling Vortex Screaming Nemesis Skullcrack Stigma Lasher Sunspine Lynx The Lord of Pain Tibalt, Rakish Instigator Witch Hunt

Corrupted Exile that creature instead if its controller has three or more poison counters

Sometimes, two attacks with your commander is all you need

Note that your cards that untap things, even the Bad Combos work amazingly with The Ring