Teferi's Response [Invasion] Magic Origins Prerelease Promos put a +1/+1 counter on

put a +1/+1 counter on each attacking creature you control

"If we cannot live proudly

Set: Legends Type: Creature — Elf Rarity: Rare Cost: {3}{G}{G} Elven Riders can't be blocked except by Walls and/or creatures with flying

Set: Eternal Masters Type: Sorcery Rarity: Rare Cost: {X}{G} Search your library for a green creature card with mana value X or less

scorning the impetuous haste of short-lived mortal creatures

Teferi's Response [Invasion] Magic Origins Prerelease Promos put a +1/+1 counter onSet: Invasion Type: Instant Rarity: Rare Cost: {1}{U} Counter target spell or ability an opponent controls that targets a land you control. If a permanent's ability is countered this way, destroy that permanent. Draw two cards.