For Standard, such effects and cost are usually too slow to matter
Whats the point of drawing all those cards if you have to discard them to hand size
This theme works on three levels: Payoffs (i.e., Judge Magister Gabranth, Al Bhed Salvagers) Sacrifice outlets (i.e., Phantom Train, Namazu Trader, Ahriman) Fodder (Hecteyes, job select equipment, Rufus Shinras poor disposable dog) A good WB deck has a healthy mix of all three, plus lots of strong removal spells like White Auracite and Sephiroth's Intervention
Sources: PSA/XY Charizard, PSA/Cosmos Machamp, PSA /Rayquaza VMAX, PWCC/Pokmon Snap Pikachu, PSA/Base Set Squirtle, PWCC/Venusaur Promo, PSA/Mewtwo
This artwork from MTG 2014 is a particularly badass one showing how this effect works in a more stylized manner, and I love it