mtg discard a card draw a card What's the context of "discard another card"? Grab the Prize deals 2 damage to each opponent. Grab the Prize

Contents: 14 Magic: The Gathering cards

This Cosmic variant of the wallcrawler is not only a bowl of keyword soup in his own right (he has Flying, First Strike, Trample, Lifelink, and Haste), but he passes those abilities to all of the other Spiders you have when you head into combat

Obviously stealing planeswalkers can be very powerful, especially if you can ultimate them right away, but Callidus Assassins flash, as well as the fact that it destroys the creature rather than having your opponent get it back when it leaves the battlefield, are significant as well

A Goblin Lord only goes into a Goblin deck

The thing that pushes Arcane Denial over the top in terms of all round goodness is that you can put it to effective use even against red deck wins where the card disadvantage is too dangerous