cards with harmonize mtg Songcrafter Mage - Single Card Child of Bast Harmonize · Planar Chaos (PLC)

The mana base works fine without Arid Mesa, and Monastery Mentor can easily become Young Pyromancer if you dont have a copy

But even an even exchange with the discard coming first can have a card quality discard effect (that is it forces players to exchange cards they've been saving for random cards making the player lose overall card quality)

If you are a free-to-play player, you're likely pinched on rare wildcards, and having to spend them on commons like Faithless Looting and Brainstorm is probably even more painful for you

The set of creatures affected by Elspeth's Talent's last ability is determined as the ability resolves