Cards like Mirror Shield will ensure Valduk doesnt eat a removal spell before he gets to dance, which can often set you back a turn or two
Giving haste to all your creatures is one of the things red does best, and many creatures that need to attack or deal damage get substantially better
[[Dualcaster Mage]] + [[Twinflame]] / [[Molten Duplication]] Pieces: [[Dualcaster Mage]] + [[Twinflame]] or [[Molten Duplication]] Execution: Cast [[Twinflame]] [[Molten Duplication]] targeting a creature you control
Solemn Simulacrum is a body and mana ramp with its etb
Obviously, Nightpack Ambusher gives you a huge reward for being able to play completely at instant speed, but thats not all
However, misprints that make the card confusinglike a Forest with Plains art, a half-and-half miscut that shows two cards, or anything blankoften arent allowed because they can mislead opponents or reveal information