mtg sliver card price spike Queen, Stronghold (ST) History its controller may draw a card. Commander Masters Sliver Spikes to

This will immediately supplant them in any deck that can rub two blue mana together

Already we've seen a massive boost in price to two of the best Slivers printed in recent years, and now, even older creatures like Galerider Sliver are starting to rise

Everything in the lair is themed around tomb raiding, and lots of it is valuable: Search for Azcanta, Anger of the Gods, Bow of Nylea, Shadowspear, Academy Ruins Through the Wormhole - The cards in this Secret Lair aren't particularly valuable, but the contents - Lightning Greaves, Arcane Signet, Sol Ring, Thought Vessel, and Command Tower - are a complete playset of Commander essentials, in a beautiful and consistent art style by Dani Pendergast

Vraska has the weakest static ability of the bunch, but a 1/1 super Deathtouch protects her well and a second token basically assures she produces card advantage

If you get them for kitchen table, Cube or Commander, or any casual format rather than competitive, it is a no-brainer