If the target of any of Deathrite Shaman's three abilities is an illegal target when that ability tries to resolve, it won't resolve and none of its effects will happen
It's not so much that they have more cards, are ahead on board, or are winning a race
[5] [6] Heavily influenced by the popular Apples to Apples card game, it was initially named Cardenfreude [7] (a pun on the German concept Schadenfreude ) and involved a group of players writing out the most abstract and, often, humorous response to the topic question
Players still get priority while a spell with split second is on the stack
Incandescent Arcana /s11a
These cards are usually banned from play in those formats, and you can find more information on which cards are banned in which formats and for what reason here