MTG Salvation

DSignified Duelist RW
Creature - Human Warrior
First strike
When <this> comes into play, you may have each opponent sign on it.
<This> gets +1/+1 for each different signature on it.
1/1

Design: A proud, grinning Keldon warrior with his standard attire and holding the top of a parchment in his right hand as though he is giving that for someone to sign on. The parchment would be lined (for easy signing) and would occupy most of the card space, leaving only just enough for the rest of the card. And the crossing out is intentional, by the way.

Simic Shedding 1GU
Instant
Remove all sleeves on target creature and put each of them into play as a token copy of that creature.

Design: A dog-like creature which keeps scratching and shedding its skin, which falls down as regular card sleeves. The sleeves falls to the bottom of the card and collects into a pile, which is converging into a copy of that creature.

For these cards, I avoid legends and special mechanics for obvious reasons. Usually only one type of token will be found in any given deck. Gearmancer will encourage the drafting of small equipment which is not commonly done. With multiple colours being the usual build, Hazy Landscape should be quite suitable in getting the right mana. Lastly, as it is difficult to draft multiple copies of nonland cards, the orb should not break limited.

White uncommon (answer to tokens)

Arbitary Detainment 1WW
Enchantment - Aura
Enchant creature
Enchanted creature and creatures with the same name as it doesn't untap during its controller's untap steps unless its controller pay 1.

White rare (Johnny enchantment)

Highlander's Sovereign 1W
Enchantment
Creatures you control are legendary and get +2/+2.

Blue common (Sorcery)

Disinterest 1U
Sorcery
Creatures don't untap during their controllers' next untap steps.

Blue rare (Timmy creature)

Ophidian Subduer X1UU
Creature - Human Wizard
When <this> comes into play, gain control of any number of target creatures with total converted mana cost of X or less.
1/1

Black uncommon (Aura on your creature)

Skeletal Brace B
Enchantment - Aura
Enchanted creature has fear and must attack each turn if possible.

Black rare (Anything)

Grim Warden 1B
Creature - Human Warrior
Whenever <this> attacks and is unblocked, you may sacrifice <this>. If you do, return target creature from your graveyard to play attacking. Remove that creature from the game at end of turn.
1/1

Red common (Instant or sorcery)

Barreling Tactics R
Instant
Creatures with converted mana costs 2 or less can't block until end of turn.

Red uncommon ('Build around me' creature)

Arko Gearmancer 2R
Creature - Human Wizard
Equipment you control have "2, Unattach this equipment: This equipment deals 2 damage to target creature".
2/2

Green common (creature with >=4 converted mana cost)

Canopy Draconoid 3G
Creature - Wurm Mutant
<This> can't be blocked except by creatures with flying.
If you control two or more untapped forests, <this> can't be target of spells or abilities.
2/2

Green rare (noncreature spell)

Verdant Mandate 2GG
Sorcery
Sacrifice a noncreature permanent. Search your library for up to X basic land cards and put them into your hand, where X is the amount of coloured mana in that permanent's mana cost. Then shuffle your library.

Artifact/land common (Mana fixer)

Hazy Landscape
Land
Tap: Add 1 to your mana pool.
Tap, Reveal a card from your hand, Sacrifice <this>: Add a mana of any colour of the revealed card to your mana pool.

Artifact/land uncommon (Millstone variant)

Sightless Orb 3
Artifact
2, Tap: Put the top card of target player's library into his or her graveyard. If another nonland card in that graveyard has the same name as it, instead remove it from the game and he or she may play it as though it were in his or her hand until end of turn.