Where Arcane Wizardry lags is in instant-speed interaction
Remember that if you want unique backs for the cards in your deck, you'll need to create a mirroring deck with those back designs and then check the Unique Backs option in the import dialog
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The most effective and simplest way to use Courtesan Thais is to cast her while your opponent is on Deaths Door so that way you can cast their damage spell to end the game, or you can simply force their avatar to attack your unit resulting in their avatar taking the final point of damage to end the game
We also get to mill ourselves, which, in the right deck or even the right format, is akin to drawing three cards anyway
This is a long rambly way of saying that Erebos, Bleak-Hearted is a very strong Sacrifice commander, but he'll end up being better in the 99 of even stronger Sacrifice commanders, of which there are a crapton at this point