Collective Restraint [Invasion] Commander 2015 Whenever a creature an opponent

Whenever a creature an opponent controls with a -1/-1 counter on it dies

Zhang Fei's uncharacteristic alliance with a defeated Riverlands general

Set: Unlimited Edition Type: Land — Island Swamp Rarity: Rare ({T}: Add {U} or {B}

−5: Artifacts you control become artifact creatures with base power and toughness 5/5 until end of turn

Set: Legends Type: Enchantment Rarity: Rare Cost: {2}{W}{W} Whenever a Mountain an opponent controls becomes tapped

Collective Restraint [Invasion] Commander 2015 Whenever a creature an opponentSet: Invasion Type: Enchantment Rarity: Rare Cost: {3}{U} Domain Creatures can't attack you unless their controller pays {X} for each creature they control that's attacking you, where X is the number of basic land types among lands you control.