Most Standard Magic decks have many spells that cost two, three, and four mana, and fewer spells that cost one or less and five or more
Also recommend Vito, Thorn of the Dusk Rose for doubling up on life loss, Well of Lost Dreams for a consistent draw engine, Scavenging Ooze for graveyard hate that synergizes with your play pattern, Bloodthirsty Conqueror is a duplicate of Exquisite Blood that goes infinite with your commander, Prosperous Innkeeper for one shot ramp strapped to a soul-sister type of effect, and some sac outlets like Viscera Seer wouldn't go amiss since you really want things to die
Accumulate enough green mana to overthrow your opponents
This land can make a creature with less than three power unblockable for the turn
Ultimately, were just going to have to wait and see what happens