Arena Rector [Judge Gift Cards 2020] Two-Headed Giant Tournament Sacrifice this artifact: Add one

Sacrifice this artifact: Add one mana of any color

lands you control gain "Sacrifice this land: Add {B}

Collectors’ Edition Type: Instant Uncommon Cost: {U}{U} Counter target spell

but I didn't expect it from the building itself

{T}: Counter target activated ability from an artifact source unless that ability's controller pays {W}

Arena Rector [Judge Gift Cards 2020] Two-Headed Giant Tournament Sacrifice this artifact: Add oneSet: Judge Gift Cards 2020 Type: Creature Human Cleric Rare Cost: {3}{W} When Arena Rector dies, you may exile it. If you do, search your library for a planeswalker card, put it onto the battlefield, then shuffle your library. Her call echoes across worlds, calling the loyal to battle.