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
So, a deck in 7-Point Highlander (AKA Australian Highlander) might include seven cards each worth one point or could go all in on Time Walk (five points) and Demonic Tutor (two)
The bane of white-blue decks in that format was Cabal Torturer, and without Psionic Gift, the only good way to deal with this creature was to splash red or black as a third color, weakening your mana base
Fortunately, there are good ways to trigger it on your opponents' turns as well, using cards like Unlicensed Hearse or Ghost Vacuum to maximize its potential
Konamis approach to rebooting the physical card game was a more faithful interpretation, following the rules introduced in the manga as much as possible
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