Whether its part of a dedicated mana-denial plan with land destruction or simply for playing mind games in open-deck events, Mana Tithe adds just the right amount of stack interaction to whites arsenal
You will still need to pay the individual casting cost for each Commander, and Commander damage done to other players is tracked per card , not as a total
in other cases, when a creature is put onto the battlefield attacking, that creature's controller chooses which player, planeswalker, or battle it's attacking
For Articuno variants, switch out Pokedex for Misty for the Energy acceleration
The only thing Ive seen anywhere sealed is M4 Ninja Spinner loose packs
Kaalia of the Vast and Sivitri, Dragon Master can be strong dragon commanders