Muse, the King of Dreams

This spell costs {1} less to cast for each spell
you've cast this turn.
Indestructible
You may not cast spells from your hand.
You may look at the top card of your library at any time, and you may play lands and cast spells from
the top of your library.
{2}{u/b}{u/b}: Target player shuffles their library. You
lose 2 life.
"I bid thee welcome, O dreamwalker, to my realm."