This will go like usual for this deck
If you have one spot to fill, Id instead advocate for Halvar
In fact, Katara alone may have been enough to make Harabaz Druid spike, even though she doesn't synergize with it specifically, but fans are likely also banking on there being all kinds of other cool allies in this set - which seems like a pretty safe bet
You might take away their fourth land or their preferred three drop but that won't actually do anything for two or three turns which greatly reduces the value of Blackmail being one mana
BUG has long been considered the strongest tri-color combination, but we've never had a particularly good multiplayer commander for the color wedge up until now
Sinkhole Mind Twist Armageddon Balance Wheel of Fortune Time Twister Dark Ritual Winter Orb Berserk Channel Ankh of Mishra Bazaar of Bagdad Animate Dead Before jumping into this top ten we have one final list of cards that includes everything else from this magnificent year of MtG that is still relevant in cube in some way or another