Sinkhole

Enchant creature Enchanted creature gets +2/+2 and has trample. Whenever enchanted creature deals damage, you gain that much life.

This land enters tapped. When this land enters, you gain 1 life. T: Add G or U.

Enchant creature You control enchanted creature.

Creature tokens you control get +1/+1 and have vigilance.

Flame Jab deals 1 damage to any target. Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.

Whenever a nontoken creature is put into your graveyard from the battlefield, create a 1/1 white Spirit creature token with flying.

Enchant creature Enchanted creature gets +2/+2 and can't block. When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.