How it works
Prerequisites
- The card in your graveyard is Careful Study.
- One mana prepared spell
Steps
- 1Cast a copy of Careful Study by paying .
- 2Nantuko Shrine and Displacer Kitten trigger.
- 3Resolve the Nantuko Shrine trigger, creating at least one 1/1 Squirrel creature token.
- 4Resolve the Displacer Kitten, blinking Spellbook Seeker // Careful Study, which enters prepared.
- 5Activate Phyrexian Altar by sacrificing the Squirrel token, adding one mana.
- 6Resolve the Careful Study copy, drawing two cards and discarding two cards.
- 7Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?