Changeling Hero [Mystery Booster] Ogre Warrior Guest those permanents can't attack or

those permanents can't attack or block and their activated abilities can't be activated

That artifact's controller gains life equal to its mana value

Set: Fallout Type: Legendary Creature — Human Advisor Rarity: Rare Cost: {2}{W} First Contact — Whenever Overseer of Vault 76 or another creature with power 3 or less enters the battlefield under your control

"Life as we know it dangles on the brink of extinction

Changeling Hero [Mystery Booster] Ogre Warrior Guest those permanents can't attack orSet: Mystery Booster Type: Creature Shapeshifter Rarity: Uncommon Cost: {4}{W} Changeling (This card is every creature type.) Champion a creature (When this enters the battlefield, sacrifice it unless you exile another creature you control. When this leaves the battlefield, that card returns to the battlefield.) Lifelink (Damage dealt by this creature also causes you to gain that much life.)