Aren, Undying Smith

Deathtouch, Persist

Soul of Artifice — Whenever an artifact is put into your graveyard from anywhere you may exile that card with a number of time counters equal to it's mana value plus one. If it doesn't have suspend, it gains suspend.
{1}{w}, {t}: Time travel. (For each suspended card
you own and each permanent you control with a time counter on it you may add or remove a time counter.)