turtle cards mtg t:turtle · Scryfall Magic: The Gathering Search Turtle cant attack or block unless there are three or more Lesson cards in your graveyard. Magic: The Gathering Horned Turtle

It was a new type of mana (something we don't make very often), required a new frame, and interacted with deck building in a new way

For further details, including release dates, more previews, and info on the Warhammer Secret Lairs, try out Warhammer 40k MTG crossover guide.

Resurrection as a power upgrade

While there may be other cards with similar effects, Imoen's unblockable ability and potential for repeated damage make it a strong contender for inclusion in decks focused on spell-slinging strategies

they will continue using the cards as they were originally printed

Instant Until your next turn, you life total cant change and you have protection from everything