Teferi, Mage of Zhalfir [Time Spiral] Field Spell If an "Arcana Force" monster

If an "Arcana Force" monster destroys an opponent's monster by battle

all face-up monsters currently on the field become that Attribute until the end of this turn

this card can be used as the entire Tribute

If you control no other monsters: You can Special Summon 1 "World Legacy Token" (Machine/DARK/Level 1/ATK 0/DEF 0) to both players' fields in Defense Position

destroy all monsters your opponent controls and inflict 500 damage to your opponent for each monster destroyed by this effect

Teferi, Mage of Zhalfir [Time Spiral] Field Spell If an "Arcana Force" monsterSet: Time Spiral Type: Legendary Creature Human Wizard Rarity: Rare Cost: {2}{U}{U}{U} Flash Creature cards you own that aren't on the battlefield have flash. Each opponent can cast spells only any time they could cast a sorcery. To save this plane, he must forsake all others.