3 cards where the name includes “weakstone”

The Mightstone and Weakstone (The Brothers' War #238a)
Meld - BRO Urza Bottom

The Mightstone and Weakstone {5}

Legendary Artifact — Powerstone

When The Mightstone and Weakstone enters the battlefield, choose one —

• Draw two cards.

• Target creature gets -5/-5 until end of turn.

{T}: Add {C}{C}. This mana can’t be spent to cast nonartifact spells.

(Melds with Urza, Lord Protector.)

Illustrated by Ryan Pancoast

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny
Weakstone (Masters Edition IV #239)

Weakstone {4}

Artifact

Attacking creatures get -1/-0.

During the brothers’ childhood, Tocasia took them to explore the sacred cave of Koilos. There, in the Hall of Tagsin, Mishra discovered the mysterious weakstone.

Illustrated by Justin Hampton

Part of the Reserved List

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny
Weakstone's Subjugation (The Brothers' War #72)

Weakstone's Subjugation {U}

Enchantment — Aura

Enchant artifact or creature

When Weakstone’s Subjugation enters the battlefield, you may pay {3}. If you do, tap enchanted permanent.

Enchanted permanent doesn’t untap during its controller’s untap step.

Illustrated by Igor Kieryluk

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny

In the blink of an eye, they strode from deep snow to the end of this search.