To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases (such as that of Reidane, God of the Worthy), then apply any cost reductions
Because the attacks are so powerful, though, they usually require you to discard the Energy card
Let me ask you this - would you consider these two cards to be the same card, or different cards
If you don't, you instead deal two damage to each opponent
Archangel of Thune puts a +1/+1 counter on each creature you control whenever you gain life, which means infinite life and infinite counters on creatures you have on the battlefield
And thats enough of a reward for me