Tiier, the Energy of the Grid

At the start of your upkeep, summon one Grid
Power and put it into play. Whenever you
sacrifice a Grid Power, you may draw a card.
"Tiier, bless her. she was created as a backup power
source if my babies were to fail. However, somehow,
she just kinda gained sentience. When that happened,
she started to take her job seriously and selflessly,
never letting the Grid's power sources fall below
critical." - Girl of the Grid