Powder & Ekko, Saved By Time

Powder —Whenever you attack, exile cards from the top of your library until you exile a nonland card.
Put three time counters on it. If it doesn't have suspend, it gains suspend.
Ekko — {7}: Time travel three times. Activate only as a sorcery.

“Taking a leap forward, means leaving a few things behind…” -Powder
“Can we just pretend like it’s the first time?” -Ekko