This will give you a much bigger card pool to play with and a great head start on your road to Standard domination
Not only does this guarantee consistent land drops, but it also thins your deck, increasing the odds of drawing into your key spells
Speaking of #6 Zephyr Spirit (Ravnica) Why is it bad
A 3-mana tutor with limited targets is too slow for just about any other format, but there are folks who rock it in Amulet Titan builds in Modern to find Summoner's Pact, Tron players who use it to grab those coveted Urza lands, and even Living End decks to grab their namesake cards
It has to stick around for a turn, absent an Anger in your graveyard, but it pays for itself twice over once it hits an opponent
MagicCon Las Vegas: Torgal, Clive's Companion (reskinned Yoshimaru, Ever Faithful)