Xantcha [Vanguard Series] Serra's Realm they tap all lands with

they tap all lands with mana abilities they control and lose all unspent mana

Swimming in coins proved harder than they'd hoped

Set: Urza's Destiny Type: Artifact Creature — Construct Rarity: Rare Cost: {3} {T}: Reveal any number of artifact cards in your hand

For example

Oketra's closest viziers are known as her chosen

Xantcha [Vanguard Series] Serra's Realm they tap all lands withSet: Vanguard Series Type: Vanguard Rarity: Rare Sacrifice a permanent: Regenerate target creature. A Phyrexian "sleeper agent," Xantcha has developed an inviolate sense of self. This aberration earned her a death sentence, but she was rescued by Urza and joined his crusade. Her Phyrexian credo of "Waste not, want not" has helped Urza more than even he comprehends.