Urza's Sylex (Extended Art) [The Brothers' War] Amonkhet Promos put them onto the battlefield

put them onto the battlefield

and you may spend mana as though it were mana of any type to cast that spell

Set: Ultimate Masters Box Topper Type: Creature — Elemental Shaman Rarity: Mythic Cost: {1}{B/R}{B/R} Sacrifice Fulminator Mage: Destroy target nonbasic land

Flashback {2}{R}{W} (You may cast this card from your graveyard for its flashback cost

Urza's Sylex (Extended Art) [The Brothers' War] Amonkhet Promos put them onto the battlefieldSet: The Brothers' War Type: Legendary Artifact Rarity: Mythic Cost: {3} {2}{W}{W}, {T}, Exile Urza's Sylex: Each player chooses six lands they control. Destroy all other permanents. Activate only as a sorcery. When Urza's Sylex is put into exile from the battlefield, you may pay {2}. If you do, search your library for a planeswalker card, reveal it, put it into your hand, then shuffle.