Elrond, Lord of Rivendell

Scry-when-a-creature-enters is a familiar smoothing effect, but the second sentence is where the engine sits: the ability counts its own resolutions and pays the second one each turn with a temptation of the Ring. That reframes an incidental filtering trigger into a rate you build toward deliberately. One creature entering smooths a draw; two climbs a rung on the Ring ladder, and because the wording keys on the second resolution rather than a specific source, tokens, flicker, and cheap bodies all feed the same counter. It watches for any creature you control entering (not just Elrond, not just hardcast spells), which rewards going wide and rewards slipping a creature in at instant speed to squeeze the second trigger into a single turn. The 3/2 body is intentionally fragile: this is a piece asked to survive and keep the counter ticking, not to trade in combat, and blue's toolkit points it toward leaning on other creatures rather than defending itself. The two halves close a loop within a turn's tempo: scry aims your draws at more creatures, and more creatures keep the temptation coming. What sets it apart from the other Ring-tempts payoffs is scheduling: the trigger answers to your own board development rather than to attacking or to casting a particular named card, so you control when the second resolution lands.