When he wasn't busy grabbing the entire untap step for himself and denying it to you, or tapping down the land you untapped, he would tap his own Howling Mine after drawing the extra card
Dragons (85) Duel Decks: Merfolk vs
You can also pay three mana and tap it to make a 2/2 with every creature type - we dont expect that to be the most important part, though
Non-foil and traditional foil dragon's eye lands are available only in Tarkir: Dragonstorm Collector Boosters
All cards are copyright Wizards of the Coast and many included images and symbols are trademarks of Wizards of the Coast LLC (now a subsidiary of Hasbro.) Frequently Asked Questions Here are a few questions we've seen asked about artifact card draw, and some answers
Auron, Venerated Guardian , for example, gains +1/+1 counters when you attack with him, and then exiles a creature the defending player controls with power less than Aurons, until he leaves play