This is done in the way of counterspells, as well as Equipment that makes it impossible to target.
This amazing card enables you to look through your deck for defensive cards that will shield your monsters, offensive options to take out your opponent's forces, or support strategies that can bolster up yoursall at once
Rare cards like holographic Gallantmon can fetch prices upwards of several hundred dollars
Flame Rift A nice tool for Monored Burn, a fifth Boros Charm if regular Burn wants it, and most of all, a wonderful tool for Scourge of the Skyclaves
Attack: Fire Spin (100 damage)
That means that while it's not particularly helpful (or threatening) on turn two, over the course of a game it could easily end up making you six, or even ten mana a turn, fueling your ascent to victory