Commander Masters

Kaho, Minamo Historian

When Kaho, Minamo Historian enters the battlefield, search your library for up to three instant cards, exile them, then shuffle.
{X}, {T}: You may cast a spell with mana value X from among cards exiled with Kaho without paying its mana cost.

When Kaho, Minamo Historian enters, search your library for up to three instant cards, exile them, then shuffle.
{X}, {T}: You may cast a spell with mana value X from among cards exiled with Kaho without paying its mana cost.

Saviors of Kamigawa

When Kaho, Minamo Historian comes into play, search your library for up to three instant cards and remove them from the game. Then shuffle your library.
{X}, {T}: You may play a card with converted mana cost X removed from the game with Kaho without paying its mana cost.