Teferi's Response [Invasion] Pioneer where X is the number

where X is the number of cards in their hand minus 4

Tapped creatures you control can block as though they were untapped

Set: Magic 2015 Type: Creature — Wall Rarity: Uncommon Cost: {1}{U}{U} Defender

Set: Commander 2016 Type: Artifact Rarity: Rare Cost: {5} You have no maximum hand size

Set: Commander Anthology Volume II Type: Sorcery Rarity: Rare Cost: {2}{B}{B} All creatures get -4/-4 until end of turn

Teferi's Response [Invasion] Pioneer where X is the numberSet: 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.