The card in question will let you know if you can do so, but it's fairly common for cards to have activated abilities that only work if theyre in a graveyard, like Balustrade Wurm, Bloodsoaked Champion, or Reassembling Skeleton
Toxicrene Toxicrene is a mana fixer that doubles as land hate
White has several permanents with abilities that can counter spells, but the rattlesnake element is lost when your opponent can see those permanents on the battlefield and play around them accordingly
Plus, they will stick around if the creature they are assigned to get destroyed, to pass along the torch
I quite like taking Seize the Day as the 2nd or 3rd extra combat effect in a suite
This lot contains 1000+ Magic: The Gathering cards, including: at least 950 commons and uncommons, 25 rares, PLUS an additional 25 rare, foil, or promotional cards all packaged securely in a high quality 1000 count cardboard box custom made for Star City Games collections