Mirror Shield It's crucial to protect your most important creatures from targeted removal, especially if a lot of your deck's power relies on specific creatures being on the battlefield
You get to draw an extra card, re-spend all your mana, and get an extra combat stepnot to mention extra upkeep/end step triggers, planeswalker activations, and so on
Weve left the few pieces of acceleration, a turn one Sol Ring certainly can make for some explosive turns, while the Golgari Signet smoothes early mana troubles and Thought Vessel is great with a big Decree of Pain
This is a great rate in two and three-color decks, and could even see use in four and five-color decks with a budget
one is randomly found in each Prerelease Pack
Youll want at least one or two of these in an aggressive deck to deal with your opponents winning position, while control decks will want to fill most of their deck with these cards, spending much of your game removing and disrupting your opponents threats