When Yasharn enters the battlefield, search your library for a basic Forest card and a basic Plains card, reveal those cards, put them into your hand, then shuffle. Players can't pay life or sacrifice nonland permanents to cast spells or activate abilities.
![Yasharn, Implacable Earth (Extended Art) [Zendikar Rising]](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/33425421-fdcc-5c2f-9cfa-39e06b6a27cc.jpg?v=1698560923&width=1445)