If you are not playing Eidolon of the Great Revel, I think you should play some copies of Mutavault
Regardless, throw Fact or Fiction into the Izzet Box and get ready for some extraordinary swings, courtesy of a truly busted throwback
Fun Ranking: Want to Build Niv-Mizzet, Visionary Did you know Niv-Mizzet, Visionary combos with Niv-Mizzet, the Firemind and Niv-Mizzet, Parun
It is an elemental enchantment creature with trample that has a power and toughness of 5/5
So, turn-4 Cerberus followed by turn-5 Time Warp is possible
Using extra rules text to add behold to the existing champion mechanic proved unwieldy (and worked differently than champion because the creature returns to your hand)