Serra AscendantLifelink (Damage dealt by this creature also causes you to gain that much life.) As long as you have 30 or more life, Serra Ascendant gets +5 +5 and has flying.

Whenever you gain life

(It has every creature type

Lifelink (Damage dealt by this creature also causes you to gain that much life

exile it instead of putting it into its owner's graveyard

Discard a card: Look at the top X cards of your library

each player draws a card

where X is the number of artifacts you control

reveal the top ten cards of your library

(Exile cards from the top of your library until you exile a nonland card with mana value 5 or less

Other enchantments you control have shroud

Its controller may search their library for a basic land card

Sacrifice Polluted Delta: Search your library for an Island or Swamp card