Format Legality
Tiny Leaders Legal
Noble Legal
Leviathan Legal
Magic Duels Legal
Canadian Highlander Legal
Vintage Legal
Vanguard Legal
Legacy Legal
Archenemy Legal
Planechase Legal
1v1 Commander Legal
Duel Commander Legal
Unformat Legal
Casual Legal
Commander / EDH Legal

Printings View all

Set Rarity
Premium Deck Series: Slivers (PDS) Uncommon
Stronghold (STH) Uncommon

Combos Browse all



Activated abilities of creatures cost less to activate. This effect can't reduce the amount of mana an ability costs to activate to less than one mana.

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Heartstone Discussion

SynergyBuild on Sai Artifact Storm

2 weeks ago

You know Heartstone makes Sai's ability only cost , which allows you to storm off even more!

Guffawkle on Tap Out Walkers

3 weeks ago

If you REALLY want to keep Sliver Queen as your commander, I recommend adding Heartstone or Training Grounds to make tokens cheaper, and maybe Sliver Legion to seriously buff all the tokens you make, but at that point you may as well just build a sliver deck. I personally like the idea of Ramos, Dragon Engine as a five color commander, but it's up to you.

LVL_666 on The Queen's Egg

1 month ago

cdkime, I appreciate criticism- especially constructive criticism. I was also wrestling with the idea of making a Countersquall sliver, but I had no idea how to make it work. You're right though, dropping the ETB counter ability seems right as no sliver ever had an ETB trigger.

CMC , All slivers gain " Sacrifice this creature: Counter target noncreature spell. It's controller loses 2 life.", power and toughness 2/2.

That's simple, yet elegant. The best part is that Training Grounds or Heartstone can't interact with the ability. cdkime, that was an excellent suggestion. I think I can honestly say that Countersquall sliver is my dream sliver. If only I could inception this idea into MaRo's head...

j040 on Kazarasjnikov, Sengir Blitz Bomber

2 months ago

I Used to run Heartstone along with my Olivia EDH. Sudden Spoiling is required for ping vs creature-heavy decks, also Blasphemous Act is good if you run against big stuff, Hour of Devastation against indestructible.

Wolffey05 on Ultimate Fungus

2 months ago

Currently on the chopping block being considered to be replaced....

Thallid Shell-Dweller


KomboKing57 on Rise of the Lich Queen

2 months ago

Have you considered Heartstone or Training Grounds. Might make it easier to create zombies with varina and gives you some good instant response creature creation.

VietMoneys on

2 months ago

You won't feel so sexy when I use it and Heartstone to cheat out Herald of Leshrac and Mournwhelk for no mana, KittenPetter!

pokepower116 on Xantcha Sleeper Agent

2 months ago

Huge fan! Keep up the amazing work!

Didn't know about Necrogen Mists! Will have to think about adding that one to my list.

A spicy piece of tech that might be worth a glimpse is Thran Turbine. It's kind of like a Sol Ring that can pretty much only be used on activated abilities. Thran Turbine pairs up nicely with Heartstone, giving you a free Xantcha activation every upkeep. Not sure if it's worth a card slot but thought it would be worth mentioning!

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