Azorius Traffic Enforcement [Unknown Event] Halfling Citizen Whenever Cavern-Hoard Dragon deals combat

Whenever Cavern-Hoard Dragon deals combat damage to a player

Set: Unknown Event Type: Creature — Phyrexian Cleric Rarity: Common Battles you control have "-3: You draw a card and lose 1 life

then put Jitte and Divining Top on top of its owner's library

Set: Secret Lair Drop Series Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1/+1 counters on it

Set: March of the Machine: The Aftermath Type: Legendary Creature — Angel Rarity: Rare Cost: {2}{G}{W} Flying

Azorius Traffic Enforcement [Unknown Event] Halfling Citizen Whenever Cavern-Hoard Dragon deals combatSet: Unknown Event Type: Creature Human Soldier Rarity: Common Creatures opponents control entering the battlefield don't cause backup abilities to trigger. At the beginning of your combat step, detain target creature with backup or vehicle an opponent controls. (Until your next turn, that permanent can't attack or block and its activated abilities can't be activated.)