Shadows over Innistrad Remastered

Spell Queller | Creature | Spirit | Flash Flying When Spell Queller enters the battlefield, exile target spell with mana value 4 or less. When Spell Queller leaves the battlefield, the exiled card's owner may cast that card without paying its mana cost. | Adam Paquette

Gisa and Geralf | Legendary Creature | Human Wizard | When Gisa and Geralf enters the battlefield, mill four cards. During each of your turns, you may cast a Zombie creature spell from your graveyard. | Karla Ortiz

Prized Amalgam | Creature | Zombie | Whenever a creature enters the battlefield, if it entered from your graveyard or you cast it from your graveyard, return Prized Amalgam from your graveyard to the battlefield tapped at the beginning of the next end step. | Karl Kopinski

Fevered Visions | Enchantment | | At the beginning of each player's end step, that player draws a card. If the player is your opponent and has four or more cards in hand, Fevered Visions deals 2 damage to that player. | Steven Belledin

Mercurial Geists | Creature | Spirit | Flying Whenever you cast an instant or sorcery spell, Mercurial Geists gets +3/+0 until end of turn. | Lake Hurwitz

Altered Ego | Creature | Shapeshifter | This spell can't be countered. You may have Altered Ego enter the battlefield as a copy of any creature on the battlefield, except it enters with X additional +1/+1 counters on it. | Kev Walker

Tamiyo, Field Researcher | Legendary Planeswalker | Tamiyo | +1: Choose up to two target creatures. Until your next turn, whenever either of those creatures deals combat damage, you draw a card. −2: Tap up to two target nonland permanents. They don't untap during their controller's next untap step. −7: Draw three cards. You get an emblem with "You may cast spells from your hand without paying their mana costs." | Kieran Yanner