Tiras, Keeper of Genesis [BP01-EN029] Starfoil Rare Phyrexian Dragon Skeleton You may cast spells with

You may cast spells with the same name as that spell from among the revealed cards without paying their mana costs

They're just elves

Set: Alpha Edition Type: Artifact Rarity: Rare Cost: {2} Time Vault enters the battlefield tapped

Set: Fifth Edition Type: Sorcery Rarity: Rare Cost: {R} Each player shuffles the cards from their hand into their library

Tiras, Keeper of Genesis [BP01-EN029] Starfoil Rare Phyrexian Dragon Skeleton You may cast spells withSet: Battle Pack: Epic Dawn Card type: Xyz Effect Monster Rarity: Starfoil Rare Attack: 2600 Defense: 1700 2 Level 5 monsters. This card's effects can only be applied or activated while it has Xyz Material. This card cannot be destroyed by card effects. At the end of the Battle Phase, if this card attacked or was attacked: Target 1 card your opponent controls, destroy the target. During each of your End Phases: Detach 1 Xyz Material from this card.