Frieren the Battlemage

Vigilance, ward{x}, protection from monocolored
At the beginning of each endstep, if Frieren the Battlemage attacked or blocked this turn, exile the top {x} cards of you library. If you do, choose two —
•Put a land or enchantment card onto the battlefield from exile.
•Play an instant or sorcery from exile without paying its mana cost.
•Exile {x} cards from opponents graveyard to your exile zone. {x}