Win Con
Try Coercion, Dark Inquiry, Diplomacy of the Wastes, Doomfall, Memory Leak, Memory Theft, Never Happened, Perish the Thought, Reckoner Shakedown, or Toil of the Invasion, if you just want to pluck a card of your choice out of an opponents hand for three mana
If Basri's Lieutenant dies at the same time as other creatures, its last ability will trigger for any of the creatures that had a +1/+1 counter on it, including itself
The Reaver Cleaver - which gets the award for coolest card name of the past few months - turns your combat damage into treasure tokens, and with the amount of keyword heavy creatures in the 99 should have no issue finding a nice target to equip to
Being inkable is great if you dont need him anymore
If a Lion Umbra you control is attached to a creature you control, that creature will continue to be a "modified creature" as long as Lion Umbra stays attached to it, regardless of whether it has any other Auras you control or Equipment attached to it or whether it has counters on it