MTG Salvation

I posted this in the Beta recently, but I'm not sure if anyone can see it there. My apologies for the double post. The other thread is here is that's a better way to do this.

Ok, so...

I control Melek, izzet paragon and Rewind is on top of my library. I Rewind my own Ponder, then with the copy, target the initial Rewind. After all players pass priority, the copy of Rewind resolves, I untap four lands, and Ponder will be on the stack alone, not countered. Is this correct?

In the same situation, what if both the initial Rewind and the copy target Ponder? I think the copy of Rewind will resolve, countering Ponder, and I'll untap four lands. Then sadly, my original Rewind will have no legal target and fizzle, so I don't get to untap four more lands. Correct?

I control Melek, izzet paragon and Rewind is on top of my library. I Rewind my own Ponder, then with the copy, target the initial Rewind. After all players pass priority, the copy of Rewind resolves, I untap four lands, and Ponder will be on the stack alone, not countered. Is this correct?

In the same situation, what if both the initial Rewind and the copy target Ponder? I think the copy of Rewind will resolve, countering Ponder, and I'll untap four lands. Then sadly, my original Rewind will have no legal target and fizzle, so I don't get to untap four more lands. Correct?

Sword from Another World 7
Artifact - Equipument
T, Sacrifice a permanent: Put a charge counter on Sword from Another World.
Equipped creature gets +10/+10 and has annihilator X, where X is the number of charge counters on Sword from Another World.
Equip: 7

Edit: Added needed clause.

Eternal Brilliance 1UU
Enchantment
X, T: Draw a card and proliferate. X is equal to the number of cards in your hand.

Soul's Redemption 3UUWW
Sorcery
Take an extra turn after this one. Whenever you cast a spell during that turn, you gain 5 life.

Shadowcraft, saying that card is too similar to Unexpected Results is like saying Rift Bolt, Firebolt, Forked Bolt, and Electrostatic Bolt are too similar to Lightning Bolt. New magic cards build off older magic cards and always have. You didn't invent reanimation, +1/+1 counters, 2/2's, or zombies, but for some reason, you still posted the above card.

Mystic Protector 1UG
Creature - Druid Cleric
T: You may put an aura card from your hand onto the battlefield.
Enchanted creatures you control have hexproof.
2/2

Plague Decimator 3BBG
Creature - Demon Mutant
Trample, infect
Discard a card: Put two -1/-1 counters on ~. Any player may activate this ability.
10/10

Quote from Voila!

Next: a parun still in Ravnica2

I might be missing something here, but this doesn't seem like a mana cost.

Pyra, Metal Twister x
Planeswalker - Pyra
+1: Put a 0/1 Pest artifact creature token onto the battlefield.
-X: Target Pest gets +X/+X until the beginning of your next upkeep.
-7: Pest creatures you control gain annihilator 1.
Loyalty: X

Next: 4UW

Breeder of Undead 4BBGG
Creature - Zombie Mutant
Graft 4
Remove a +1/+1 counter from Breeder of Undead: Return target creature card from your graveyard to the battlefield.
0/0

Next: Magma Jet

Brouhaha 3WR
Sorcery
Each creature deals damage equal to its power to each other creature.

Next:

Momentary Enlightenment
Instant
Look at the top card of your library. You may cast it without paying its mana cost. If you don't, return ~ to its owner's hand and draw a card.

Sow or Study (U/G)(G/U)(G/U)
Sorcery
Reveal the top three cards of your library and choose one: Put each land card revealed this way onto the battlefield tapped; or put each nonland card revealed this way into your hand. Then put each remaining card into your graveyard.

Next: or

Sinburner Paladin :2mana::symw::sym2r:
Creature - Knight
First strike, lifelink
Whenever Sinburner Paladin deals combat damage to a player, it deals that much damage to each creature that player controls.
2/2

Next: xBG

Rizi, Reality Tweaker 1UUU
Legendary creature - Wizard
Whenever you activate an ability for the first time in a turn, copy that ability. You may choose new targets for the copy.
Whenever an opponent activates an ability for the first time in a turn, counter that ability.
3/4

Next: A cheap beatdown general with a drawback.