Others are abilities that help a card break rules, like Rush on an Item card like White Rabbits Pocket Watch

Here are the top five pulls from Trick or Trade: Gengar 57/091 Cosmos Holo Darkness / 130 HP / Stage 2 Ability: Night Gate Switch your Active with a Benched Pokmon once per turn Nightmare (100): Opponents Active Pokmon is now Asleep Weakness: Fx2 | Retreat: 1 Current Price: $5.76 Market Price: $4.86 Launch Price: $0.31 Munkidori 095/167 Cosmos Holo Psychic / 110 HP / Basic Ability: Adrena-Brain If this Pokmon has D Energy, move up to 3 damage counters from 1 of your Pokmon to 1 of your opponents Pokmon Mind Bend (60): Opponents Active is now Confused Weakness: Dx2 | Resistance: F-30 | Retreat: 1 Current Price: $2.31 Market Price: $1 Launch Price: $0.23 Pikachu 018/091 Cosmos Holo Lightning / 70 HP / Basic Growl: Opponents next attacks do -20 damage Pika Bolt (30) Weakness: Fx2 | Retreat: 1 Current Price: $1.81 Market Price: $0.50 Launch Price: $0.14 Mimikyu 037/091 Cosmos Holo Psychic / 70 HP / Basic Ability: Safeguard Prevent all damage from Pokmon ex and Pokmon V Ghost Eye: Put 7 damage counters on opponents Active Weakness: Mx2 | Retreat: 1 Current Price: $1.56 Market Price: $0.27 Launch Price: $0.28 Darkrai 136/197 Cosmos Holo Darkness / 130 HP / Basic Dark Slumber (20): Opponents Active is now Asleep Night Cyclone (120): Move all Energy to your Benched Pokmon Weakness: Gx2 | Retreat: 2 Current Price: $1.52 Market Price: $0.26 Launch Price: $0.14 The values may not be sky-high, but thats not the point of Trick or Trade

For example: From black - discard From blue - countermagic From white - lifegain From red - haste From green - trample And then we don't make any cards in those colors with those abilities
And the LotR collectors all want them
If you do, they draw a card before its other effects.) Return target permanent card from your graveyard to your hand
Whether its saying (or screaming) certain words (as seen in some of the previous entries) so that an ability triggers or can be activated or having to do some kind of physical interaction with your card, Un-sets are very fond of these kinds of mechanics