Creeping Tar Pit [Doctor Who] Demon Dog Whenever a permanent you control

Whenever a permanent you control becomes the target of a spell or ability and opponent controls

up to one target player's life total becomes half their starting life total

Set: Mirrodin Type: Artifact Creature — Myr Rarity: Uncommon Cost: {5} At the beginning of your upkeep

Set: Born of the Gods Type: Enchantment — Aura Rarity: Uncommon Cost: {3}{W} Enchant creature

Creeping Tar Pit [Doctor Who] Demon Dog Whenever a permanent you controlSet: Doctor Who Type: Land Rarity: Rare Creeping Tar Pit enters the battlefield tapped. {T}: Add {U} or {B}. {1}{U}{B}: Creeping Tar Pit becomes a 3 2 blue and black Elemental creature until end of turn and can't be blocked this turn. It's still a land.