Flash
1U
Instant
Choose a creature card in your hand. You may pay its mana cost reduced by up to (2). If you do, put that creature into play. If you don’t, put that creature card into your graveyard.
Yawgmoth's Will
2B
Sorcery
Until end of turn, you may play cards in your graveyard as though they were in your hand. If a card would be put into your graveyard, instead remove that card from the game.
Lion's Eye Diamond
0
Artifact
Sacrifice Lion's Eye Diamond, Discard your hand: Add three mana of any one color to your mana pool. Play this ability as an instant.
[With this errata LED functions as it did before 6E rules.]
Iridescent Drake
3U
Creature - Drake
2/2
Flying
When Iridescent Drake comes into play, if you played it from your hand, return target enchant creature card from a graveyard to play enchanting Iridescent Drake. #(You control that enchantment.)#
[Errata identical to the free creatures.]
Lotus Vale
Land
When Lotus Vale comes into play, you may sacrifice two untapped lands. If you don't, sacrifice Lotus Vale. If you do, Lotus Vale gains "T: Add three mana of any one color to your mana pool."
Scorched Ruins
Land
When Scorched Ruins comes into play, you may sacrifice two untapped lands. If you don't, sacrifice Scorched Ruins. If you do, Scorched Ruins gains "T: Add four colorless mana to your mana pool."
[This closes up the loopholes of being able to use your lands for mana without first sacrificing other lands.]
Waylay
2W
Instant
Play only during combat.
Put three 2/2 white Knight creature tokens into play. Remove them from the game at end of turn.
Phyrexian Dreadnought
1
Artifact
Trample
Before Phyrexian Dreadnought comes into play, you may sacrifice any number of creatures with total power of 12 or more. If you don't, put Phyrexian Dreadnought into its owner's graveyard instead of into play.