To unlock the second ability, you need to pay the "level up" cost separating it from the first ability , which can only be done at sorcery speed
Of the Flares, two seem highly playable right out of the gate: Now, unlike the previous Modern Horizons cycles, Flares are a little bit more narrow in use in that in order to activate them for their alternative cost, you need to sacrifice a nontoken creature of the Flares respective color
If you are interested in getting a full overview of how many cards you own, try out our MTGA Assistant tool for MTGA
Now imagine getting that trigger multiple times a turn
Teferi's Protection Many EDH games revolve around surviving massive wrath effects, and Teferi's Protection, Magic's best phasing card, provides that