Farideh, Devil's Chosen is also an interesting payoff, allowing you to draw a card whenever you roll a 10 or greater (the base die is usually a d20, mind you)
When he enters the battlefield he makes each opponent discard a card, and if you pay seven mana, one of which is Blue, Black, and Red, he transforms into a Planeswalker
Rather, a second "reflexive" ability triggers when you exile each opponent's graveyard this way
There are so few things players can do once a split second card is put on the stack, but sometimes you want to flip up a morph card or spend mana another way that might not directly interact with the split second card, like foretell a card from your hand
The more you can make sorting cards routine, the faster it will go