Myla, Spectator

+4: Put three colorless artifact tokens named Darksteel Relic into play. They have indestructible.
-3: Until the beginning of your next upkeep, noncreature artifacts you control become creatures with base power and toughness 4/4.
-16: You get an emblem with "Spells you cast can't be countered." and "You and permanents you control have hexproof."