Memory Jar [From the Vault: Relics] Rivals of Ixalan Prerelease Promos then return her to the

then return her to the battlefield transformed under her owner's control

Set: Fifth Dawn Type: Artifact Rarity: Rare Cost: {3} You may play lands from your graveyard

change Halfdane's base power and toughness to the power and toughness of target creature other than Halfdane until the end of your next upkeep

You get an emblem with "You may cast spells from your hand without paying their mana costs

but effective

Memory Jar [From the Vault: Relics] Rivals of Ixalan Prerelease Promos then return her to theSet: From the Vault: Relics Type: Artifact Rarity: Mythic Cost: {5} {T}, Sacrifice Memory Jar: Each player exiles all cards from their hand face down and draws seven cards. At the beginning of the next end step, each player discards their hand and returns to their hand each card they exiled this way.