Knightly Valor | Enchantment | Aura | Enchant creature
When Knightly Valor enters the battlefield, create a 2/2 white Knight creature token with vigilance. (Attacking doesn't cause it to tap.)
Enchanted creature gets +2/+2 and has vigilance. | Matt Stewart
Patron of the Valiant | Creature | Angel | Flying
When Patron of the Valiant enters the battlefield, put a +1/+1 counter on each creature you control with a +1/+1 counter on it. | Steve Argyle
Totem-Guide Hartebeest | Creature | Antelope | When Totem-Guide Hartebeest enters the battlefield, you may search your library for an Aura card, reveal it, put it into your hand, then shuffle. | John Avon
Cruel Revival | Instant | | Destroy target non-Zombie creature. It can't be regenerated. Return up to one target Zombie card from your graveyard to your hand. | Miles Johnston
Necromantic Summons | Sorcery | | Put target creature card from a graveyard onto the battlefield under your control.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, that creature enters the battlefield with two additional +1/+1 counters on it. | Ryan Yee
Revenant | Creature | Spirit | Flying
Revenant's power and toughness are each equal to the number of creature cards in your graveyard. | Terese Nielsen
Seismic Elemental | Creature | Elemental | When Seismic Elemental enters the battlefield, creatures without flying can't block this turn. | Jasper Sandner
Conclave Naturalists | Creature | Dryad | When Conclave Naturalists enters the battlefield, you may destroy target artifact or enchantment. | Howard Lyon
Zendikar's Roil | Enchantment | | Landfall — Whenever a land enters the battlefield under your control, create a 2/2 green Elemental creature token. | Sam Burley
Possessed Skaab | Creature | Zombie | When Possessed Skaab enters the battlefield, return target instant, sorcery, or creature card from your graveyard to your hand.
If Possessed Skaab would die, exile it instead. | John Stanko
Meteorite | Artifact | | When Meteorite enters the battlefield, it deals 2 damage to any target.
{T}: Add one mana of any color. | Scott Murphy