So, when threshold is on, he reads:
"At the beginning of your upkeep, you may put a +1/+1 counter on Chlorophant.
At the beginning of your upkeep, you may put another +1/+1 counter on Chlorophant.
Threshold — As long as seven or more cards are in your graveyard, Chlorophant has "At the beginning of your upkeep, you may put another +1/+1 counter on Chlorophant.""