Aphetto Alchemist and Seeker of Skybreak can keep untapping themselves, getting 2x triggers each turn and even untap another creature just before your turn for another trigger. So in a four player game, good for 9x triggers.
Equipment that have Equip 0 can be used to get the full set of triggers off your creatures during your turn.
There is targeting with one mana, so that you can use unspent mana on triggering.
Elvish Herder requires .
Indigo Faerie requires .
Unctus, Grand Metatect can only be used as a sorcery, but it does allow you to target all your creatures for the turn with life loss and it does combo with Aphetto Alchemist and Seeker of Skybreak filtering through your deck.
Bristly Bill allow you to target a creature with each land you put into play..
Springheart Nantuko, Scute Swarm, Field of the Dead all produce token creatures with each land you put into play.
Lotus Cobra will help with the continuous targeting strategy, as well as just simply casting your spells.
Sea Kings' Blessing, Sylvan Paradise, Sway of Illusion can target all your creatures, so is are powerful cards for the engine.
Legolas's Quick Reflexes combos with Aphetto Alchemist or Seeker of Skybreak to kill off opponents creatures.
Spellskite can be used to double up on targeting triggers.
For example you use Elvish Herder to target a creature and then you use Spellskite to also target itself. Very mana efficient at the cost of life.
There are lands that can target your creatures if you are without other enablers.
Okina, Temple to the Grandfathers, Pendelhaven, Minamo, School at Water's Edge, Tolaria.
Just in general card selection has been made with creatures in mind. So many fast mana sources are going to be creature based rather than alternative choices.
Lots of one mana creatures with utility for this reason.
You put most of your lands into play and draw your deck within a few turns.
You can win with either Thassa's Oracle or Finale of Devastation.
Springheart Nantuko, Scute Swarm, Field of the Dead can overwhelm opponents with control backup.
Best against the rest
This deck doesn't really care about stax.
You don't need to be casting many spells, under a stax board you are happy to just keep putting lands into play and drawing cards with value Nadu triggers.
There are no real "hoser" cards for this card advantage engine. Note it is not even drawing, so Spirit of the Labyrinth or Orcish Bowmasters don't effect the strategy.
There are no ETB effects, aka Torpor Orb. Landfall doesn't get stopped by hate cards.
Graveyard hate is completely useless against the deck.