Whiptail Wurm [Starter 1999] SPA Cenagal siseante you may have defending player

you may have defending player activate a mana ability of each land they control and lose all unspent mana

Set: Battle for Zendikar Type: Creature — Eldrazi Drone Common Cost: {3}{B} Devoid (This card has no color

Monsters Type: Creature — Human Wizard Rarity: Common Cost: {2}{W} When Auramancer enters the battlefield

they trained in the ways of both

Set: Shadowmoor Type: Enchantment — Aura Common Cost: {2}{U} Enchant creature Enchanted creature doesn't untap during its controller's untap step

Whiptail Wurm [Starter 1999] SPA Cenagal siseante you may have defending playerSet: Starter 1999 Type: Creature Wurm Rarity: Uncommon Cost: {6}{G} It's hard to say for certain which end is more dangerous.