Added 4 cards based on revision4692.

Duct Crawler
Screeching Griffin
Shrewd Hatchling
Spin Engine

Optimized the code of 11 cards based on the same revision:

Boldwyr Intimidator
Bower Passage
Brassclaw Orcs
Gibbering Hyenas
Goblin Mutant
Hunted Ghoul
Ironclaw Buzzardiers
Ironclaw Orcs
Orcish Veteran
Orgg
Sabertooth Alley Cat

projects/mtg/bin/Res/sets/primitives/unsupported.txt

@@ -4493,15 +4493,6 @@ mana={4}{G}{G}
 type=Enchantment
 [/card]
 [card]
-name=Duct Crawler
-text={1}{R}: Target creature can't block Duct Crawler this turn.
-mana={R}
-type=Creature
-subtype=Insect
-power=1
-toughness=1
-[/card]
-[card]
 name=Duergar Hedge-Mage
 text=When Duergar Hedge-Mage enters the battlefield, if you control two or more Mountains, you may destroy target artifact. -- When Duergar Hedge-Mage enters the battlefield, if you control two or more Plains, you may destroy target enchantment.
 mana={2}{RW}
@@ -15211,15 +15202,6 @@ type=Enchantment
 subtype=Aura
 [/card]
 [card]
-name=Screeching Griffin
-text=Flying -- {R}: Target creature can't block Screeching Griffin this turn.
-mana={3}{W}
-type=Creature
-subtype=Griffin
-power=2
-toughness=2
-[/card]
-[card]
 name=Scrib Nibblers
 text={T}: Exile the top card of target player's library. If it's a land card, you gain 1 life. -- Landfall - Whenever a land enters the battlefield under your control, you may untap Scrib Nibblers.
 mana={2}{B}
@@ -15798,15 +15780,6 @@ mana={1}{B}
 type=Instant
 [/card]
 [card]
-name=Shrewd Hatchling
-text=Shrewd Hatchling enters the battlefield with four -1/-1 counters on it. -- {(u/r)}: Target creature can't block Shrewd Hatchling this turn. -- Whenever you cast a blue spell, remove a -1/-1 counter from Shrewd Hatchling. -- Whenever you cast a red spell, remove a -1/-1 counter from Shrewd Hatchling.
-mana={3}{UR}
-type=Creature
-subtype=Elemental
-power=6
-toughness=6
-[/card]
-[card]
 name=Shrine of Piercing Vision
 mana={2}
 type=Artifact
@@ -16820,15 +16793,6 @@ power=1
 toughness=1
 [/card]
 [card]
-name=Spin Engine
-text={R}: Target creature can't block Spin Engine this turn.
-mana={3}
-type=Artifact Creature
-subtype=Construct
-power=3
-toughness=1
-[/card]
-[card]
 name=Spin into Myth
 text=Put target creature on top of its owner's library, then fateseal 2. (To fateseal 2, look at the top two cards of an opponent's library, then put any number of them on the bottom of that player's library and the rest on top in any order.)
 mana={4}{U}