My personal favorite line is turn-two Seething Song (using any turn-one mana dork) to play Sneak Attack putting Worldspine Wurm into play
Truly, the possibilities for a really strong deck with these cards is endless, but for players who like to Party, Garland at the Chaos Shrine looks like the best scene box to pick up.
However, even just copying something like a Solemn Simulacrum for an extra bit of card draw and land ramp is more than worthwhile
This is usually just a color, but there are all sorts of things that you can have protection against
At the end of the Damage Step, if this card battled a monster: Change that monster's ATK to 0, also, if that monster is still face-up on the field, Special Summon 1 "Dark Soul Token" (Zombie/DARK/Level ?/ATK ?/DEF 0) with the same Level/ATK as the original Level/ATK of that monster
Back to how the deck I built specifically works