Primordial Altar
Silver Tempest (SIT 161)
Trainer
Type: Stadium
Once during each player's turn, that player may look at the top card of their deck. They may discard that card.
Set:
Silver Tempest (SIT) 
Rarity: Uncommon
Regulation:
STANDARD
Legal for Standard format until April 2025
EXPANDED
Valid en extended
Buy on TCGplayer