Black Mages Rod Black Mage's Rod effectively color-shifts Firebrand Archer to black, except its much more exciting since it triggers all your noncreature payoffs, and you can even flicker and bounce it to create more Wizard tokens
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Many players get very lax about keeping up with Smothering Tithe triggers, but with card draw added in they'll be much more likely to pay their taxes
3UU, TAP: Target player draws X cards, where X is the number of cards in your hand
Essentially a Wizard tribal deck, the deck achieves its ends through a number of blue-based combos, including Azami + Mind Over Matter to cycle (for free) through the entire deck to find the exact card needed at the right time
For Avatar: The Last Airbender, there's also the Collector Booster Box ( $455.99 $399.99 at Amazon ) for rounding out the corners of your collection, the Jumpstart Booster Box ( $167.76 $118.75 at Amazon ) with magic and Land cards, and the Bundle ( $69.99 $62.94 at Amazon ) for starting your play sessions