Ice Cauldron
{4}
Artifact
{X}, {T}: You may exile a nonland card from your hand. You may cast that card for as long as it remains exiled. Put a charge counter on ~this~ and note the type and amount of mana spent to pay this activation cost. Activate only if there are no charge counters on ~this~.
{T}, Remove a charge counter from ~this~: Add ~this~'s last noted type and amount of mana. Spend this mana only to cast the last card exiled with ~this~.
Psychic Theft
{1}{U}
Sorcery
Target player reveals their hand. You choose an instant or sorcery card from it and exile that card. You may cast that card for as long as it remains exiled. At the beginning of the next end step, if you haven't cast the card, return it to its owner's hand.