Your hold: ♠ AQ1086 ♥ 1082 ♦ 98 ♣ 1095

Lead the heart two. Partner has the minors covered, and you have spades, so declarer will be looking to ruffs for his tricks. He probably has some exceptional shape such as 6-5 or 7-5 to justify his unilateral bidding, after all. You can see from your own hand that declarer is not threatening to set up a suit for discards, but he might easily be threatening a crossruff.