If an artifact or creature is targeted but not destroyed (perhaps because it gained indestructible or became an illegal target), it doesn't count as one of the artifacts or creatures destroyed this way
As Ive mentioned before, coin flip effects that stick around on the board are always going to be easier to rely on
Astarion, the Decadent Legendary Creature, Vampire Elf Rogue Deathtouch, lifelink: At the beginning of your end step, choose one Feed Target opponent loses life equal to the amount of life they lost this turn
While an opponent is searching their library, they exile each card they find
Having evasion of its own doesn't hurt, and if you don't mind a partner that wants to hit the same saboteur effect, go for Francisco, Fowl Marauder