If a monster(s) you control is destroyed by an opponent's attack or card effect: You can pay half your LP
Vodalian Soldiers here has four different card art, and I chose this one to represent because they are so nicely colourful
Some of these are problematic with the fundamentals of the format, like Karakass ability to shut off any commander at virtually no cost, or the way Trade Secrets lets you collude with an opponent to each virtually draw your deck
It's a huge boon when building a new deck, acting as a guideline on what cards you should add to fill out a deck or which cards to cut so you can get down to 99
Enchanted creature has "Whenever this creature attacks, if its toughness is 3 or less, put a +1/+1 counter on it.") If you don't choose a target for Protective Parents's ability, the Young Hero Role token won't be created
The OverwhelmOverwhelm mode on Return of the WildspeakerReturn of the Wildspeaker can also accomplish this