Tolaria West
Land
This land enters tapped.
: Add 
.
Transmute 
(, Discard this card: Search your library for a card with mana value 0, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)
Khang Le
The List (PLST)
• #TSR-286Rulings
Cards with mana cost {0} (like Pact of Negation) and cards with no mana cost (like Ancestral Vision and Tolaria West itself) have mana value 0.
(wotc • 2021-03-19)
Cards with mana cost {X}, {X}{X}, or {X}{X}{X} have mana value 0.
(wotc • 2021-03-19)
Rulings
Cards with mana cost {0} (like Pact of Negation) and cards with no mana cost (like Ancestral Vision and Tolaria West itself) have mana value 0.
(wotc • 2021-03-19)
Cards with mana cost {X}, {X}{X}, or {X}{X}{X} have mana value 0.
(wotc • 2021-03-19)