Teferi, Master of Time (75) [Core Set 2021 Prerelease Promos] XY83 The key did not work

The key did not work on a single lock

Set: From the Vault: Relics Type: Artifact Rarity: Mythic Cost: {0} If Mox Diamond would enter the battlefield

if you have no cards in hand

{T}: Prevent the next 2 damage that would be dealt to you this turn

Teferi, Master of Time (75) [Core Set 2021 Prerelease Promos] XY83 The key did not workSet: Core Set 2021 Prerelease Promos Type: Legendary Planeswalker Teferi Rarity: Mythic Cost: {2}{U}{U} You may activate loyalty abilities of Teferi, Master of Time on any player's turn any time you could cast an instant. +1: Draw a card, then discard a card. 3: Target creature you don't control phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.) 10: Take two extra turns after this one.