Three generic, Tap, Sacrifice another creature: Draw cards equal to the sacrificed creature's toughness, then discard cards equal to its power
If I think theyre as good as you say, maybe I'll add them
Elemental Bond + Tribute to the World Tree Elemental Bond versus Garruk's Uprising sparks an interesting discussion, but I favor Elemental Bond as it has a lower threshold for that juicy card draw
Based on my (admittedly raw) data that I did spend a day with prior to editing my piece and massaging my numbers, you can see that I use the first three targets around 80% of the time
Cards like Seal of Doom, Seal of Primordium, Spore Frog, and Omen of the Sea are cheap ways to get spell-like effects from permanents, and many Sultai decks benefit from these kind of cards
Suddenly, your creatures gain invulnerability to targeted removal, death via damage, and blockers