Foundations

Herald of Eternal Dawn | Creature | Angel | Flash (You may cast this spell any time you could cast an instant.) Flying You can't lose the game and your opponents can't win the game. | Martina Fačková

Omniscience | Enchantment | | You may cast spells from your hand without paying their mana costs. | Jason Chan

Tolarian Terror | Creature | Serpent | This spell costs {1} less to cast for each instant and sorcery card in your graveyard. Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) | Vincent Christiaens

Rise of the Dark Realms | Sorcery | | Put all creature cards from all graveyards onto the battlefield under your control. | Michael Komarck

Rune-Scarred Demon | Creature | Demon | Flying When Rune-Scarred Demon enters, search your library for a card, put it into your hand, then shuffle. | Michael Komarck

Chandra, Flameshaper | Legendary Planeswalker | Chandra | +2: Add {R}{R}{R}. Exile the top three cards of your library. Choose one. You may play that card this turn. +1: Create a token that's a copy of target creature you control, except it has haste and "At the beginning of the end step, sacrifice this token." −4: Chandra deals 8 damage divided as you choose among any number of target creatures and/or planeswalkers. | Mark Winters

Brass's Bounty | Sorcery | | For each land you control, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") | Grzegorz Rutkowski

Drakuseth, Maw of Flames | Legendary Creature | Dragon | Flying Whenever Drakuseth, Maw of Flames attacks, it deals 4 damage to any target and 3 damage to each of up to two other targets. | Grzegorz Rutkowski

Preposterous Proportions | Sorcery | | Creatures you control get +10/+10 and gain vigilance until end of turn. | Ben Wootten

Ghalta, Primal Hunger | Legendary Creature | Elder Dinosaur | This spell costs {X} less to cast, where X is the total power of creatures you control. Trample | Chase Stone

Koma, World-Eater | Legendary Creature | Serpent | This spell can't be countered. Trample, ward {4} Whenever Koma deals combat damage to a player, create four 3/3 blue Serpent creature tokens named Koma's Coil. | Mark Zug

Progenitus | Legendary Creature | Hydra Avatar | Protection from everything If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library instead. | Jaime Jones

Meteor Golem | Artifact Creature | Golem | When Meteor Golem enters, destroy target nonland permanent an opponent controls. | Lake Hurwitz

Sire of Seven Deaths | Creature | Eldrazi | First strike, vigilance Menace, trample Reach, lifelink Ward—Pay 7 life. | Lius Lasahido