The recent Universes Beyond addition, Captain America, First Avenger, will probably want a copy of Inventory Management
The triggered ability gained by the creature will trigger when that creature deals any damage, not just combat damage
you may look at the top card of their library any time, you may play the top card of their library, and you may spend mana as though it were mana of any color to cast spells this way. We already wrote about this floating eyeball in-depth, but the long and short of it is that you can always choose the best player for whatever you need, and thats the kind of flexibility you really want in any deck, let alone in your commander
PlusPower has also been reduced by the new BW errata, however, it is still a viable card
Most importantly, Mega Venusaur EX has a whopping 380 HP, making it very hard to kill