Tyzrak, Forge Catalyst

Lifelink, vigilance, indestructible
You may look at the top card of your library at
any time as long as you have at least 15 or more
life than your starting life total.
You may cast the top card of your library if it's
a permanant with converted mana cost less than
or equal to 3 without paying its mana costs. If
you cast a spell this way you gain 3 life.