It's a minor Constructed staple but - perhaps more importantly - is a little bit of extra redundancy for fast mana in high powered Commander
[18-063C] Hashmal If the additional cost is paid when cast, 10 cards in the break zone are removed from the game at the same time the CP are paid
This can be quite good paired up with some very Rakdos cards that make your opponents discard their hands consistently, not allowing them to properly take advantage of the extra card theyd draw each turn
A five-mana planeswalker that has a three mana card as a zero ability, in this case Divination, is unprecedented in Standard play as far as I know, even though you need to work for it a little bit by having three artifacts on the battlefield
Kotis, Sibsig Champion Kotis, Sibsig Champion basically gives escape 3 to one of your graveyard creatures each turn, and that payoff for reanimation can't be discounted
Blue decks can be tricky between their counterspells and mill effects