The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.
"I am the Doctor. I'm coming to find you, and I will never, ever stop." —The Twelfth Doctor
{T}: Add {R}. As Cursed Mirror enters the battlefield, you may have it become a copy of any creature on the battlefield until end of turn, except it has haste.
"It's a juddering dimensional portal in a mirror in a Norwegian bedroom." —The Thirteenth Doctor
At the beginning of each of your main phases, if you haven't added mana with this ability this turn, you may add X mana of any one color, where X is the number of Islands target opponent controls.
"Love is a form of hope and, like hope, love abides in the face of everything." —The Thirteenth Doctor
Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.
"Do you like the forest being in Trafalgar Square? I think it's lovely." —Maebh
You may play an additional land this turn. Draw a card.
"Somewhere there's danger, somewhere there's injustice, and somewhere else the tea's getting cold. Come on, Ace, we've got work to do!" —The Seventh Doctor
Draw a card. You may put a land card from your hand onto the battlefield.
"We're capable of the most incredible change. We can evolve while still staying true to who we are. We can honor who we've been and choose who we want to be next. —The Thirteenth Doctor
Each legendary creature you control gets +1/+1 for each other legendary creature you control. {X}, {T}: Look at the top X cards of your library. You may reveal a legendary creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When Solemn Simulacrum dies, you may draw a card.