Forcing this deck from pick 1. Take the strongest black or white card and settle in only once both colors keep coming.
Taking every spell and ending with 10 or 11 creatures. A removal spell can't block or attack, so aim for 15–17 creatures. Late in pack 2 and pack 3, take a solid 2- or over your seventh or eighth removal spell.
Taking Azog, Moria's Ruin or Orcrist, Goblin-cleaver over Bilbo's Deadly Slice or Crude Bent Blade because they are a rare and a mythic. Take the common removal.
Ignoring the mana. Count your colored mana symbols and split 17 lands to match. Bilbo's Deadly Slice needs , so a slight lean to Swamps is common. Pick up Hobbit Hole to smooth it out.
Using Stone by Sunlight's protect mode against the wrong thing. stops "destroy" effects and lethal damage, but not a (an opposing Crude Bent Blade) or a -5/-5 like Gnashing of Teeth.