When this enchantment enters and at the beginning of your upkeep, you lose 1 life and create a Clue token (A Clue is an an artifact with ", Sacrifice this artifact: Draw a card."). Whenever you attack, put X +1/+1 counters on target attacking creature, where X is the number of permanents you've sacrificed this turn. If X is three or more, that creature gains lifelink (Damage dealt by the creature also causes its controller to gain that much life.) until end of turn.