Yasharn, Implacable Earth does not prevent abilities to be activated, even if they require to sacrifice artefacts or treasures.

[Reya87]

Hello,

It's been years that Yasharn is still not working as expected. There is a lot of creatures with abilities requiring to sacrifice artefacts and/or treasures that are not shutted down by Yasharn.

A few exemple of what you can still activate when Yasharn is on the field:

• Mondrak, Glory Dominus
• Professional Face-breaker
• Grim Hireling
• K'rrik, son of yawgmoth

Probably a lot more since we can always find abilities that ask to sacrifice artefacts and treasures.

[z33kz33k]

[[Yasharn, Implacable Earth]] [[Mondrak, Glory Dominus]] [[Professional Face-Breaker]] [[Grim Hireling]] [[K'rrik, Son of Yawgmoth]]

[github-actions]

Yasharn, Implacable Earth - (Gatherer) (Scryfall) (EDHREC)

{2}{G}{W}
Legendary Creature — Elemental Boar
4/4
When Yasharn enters, 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.

Mondrak, Glory Dominus - (Gatherer) (Scryfall) (EDHREC)

{2}{W}{W}
Legendary Creature — Phyrexian Horror
4/4
If one or more tokens would be created under your control, twice that many of those tokens are created instead.
{1}{W/P}{W/P}, Sacrifice two other artifacts and/or creatures: Put an indestructible counter on Mondrak. ({W/P} can be paid with either {W} or 2 life.)

Professional Face-Breaker - (Gatherer) (Scryfall) (EDHREC)

{2}{R}
Creature — Human Warrior
2/3
Menace
Whenever one or more creatures you control deal combat damage to a player, create a Treasure token.
Sacrifice a Treasure: Exile the top card of your library. You may play that card this turn.

Grim Hireling - (Gatherer) (Scryfall) (EDHREC)

{3}{B}
Creature — Tiefling Rogue
3/2
Whenever one or more creatures you control deal combat damage to a player, create two Treasure tokens.
{B}, Sacrifice X Treasures: Target creature gets -X/-X until end of turn. Activate only as a sorcery.

K'rrik, Son of Yawgmoth - (Gatherer) (Scryfall) (EDHREC)

{4}{B/P}{B/P}{B/P}
Legendary Creature — Phyrexian Horror Minion
2/2
({B/P} can be paid with either {B} or 2 life.)
Lifelink
For each {B} in a cost, you may pay 2 life rather than pay that mana.
Whenever you cast a black spell, put a +1/+1 counter on K'rrik.

[xenohedron]

see #9650