Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) When Acidic Slime enters the battlefield, destroy target artifact, enchantment, or land.
As Adaptive Automaton enters the battlefield, choose a creature type. Adaptive Automaton is the chosen type in addition to its other types. Other creatures you control of the chosen type get +1/+1.
Flying. When Aegis Angel enters the battlefield, another target permanent is indestructible for as long as you control Aegis Angel. (Effects that say "destroy" don't destroy that permanent. An indestructible creature can't be destroyed by damage.)
{1}{W}: Target creature you control gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.)