Stairway to The Hidden Temple

At the beginning of your upkeep put a Step counter on this artifact.
Remove three step counters: Gain 7 life or search your library for a card and put it in your hand.
Remove five step counters: Gain 10 life or put a card from you hand into play and draw a card.
Remove seven step counters: Put the top 5 cards of your library into play and gain 5 life.
Active these abilities only as sorcery speed.