Edge of Eternities: Stellar Sights

Gemstone Caverns

If this card is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand.
{T}: Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.

Tales of Middle-earth Commander

If Glittering Caves of Aglarond is in your opening hand and you're not the starting player, you may begin the game with Glittering Caves of Aglarond on the battlefield with a luck counter on it. If you do, exile a card from your hand.
{T}: Add {C}. If Glittering Caves of Aglarond has a luck counter on it, instead add one mana of any color.

The List

Time Spiral Remastered

If Gemstone Caverns is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand.
{T}: Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.

Time Spiral

If Gemstone Caverns is in your opening hand and you're not playing first, you may begin the game with Gemstone Caverns in play with a luck counter on it. If you do, remove a card in your hand from the game.
{T}: Add {1} to your mana pool. If Gemstone Caverns has a luck counter on it, instead add one mana of any color to your mana pool.