1996 world champion mtg card White Weenie Deck Tech The Magic Librarities

Basically, they make it so that both spells and abilities that your opponents control cost an extra two mana to cast or activate if they target a Merfolk you control

Urzas Saga decks often end up with a lot of zero- or one-mana permanents, and that makes Engineered Explosives attractive against those strategies

Its kind of a funny pairing

By the time you're casting a seven-mana creature, you should have enough Islands in play that Scourge bounces the majority of opposing creatures

I get that Omen of the SunOmen of the Sun makes a decent number of tokens if you cast it, sacrifice it, then bring it back with the commander, but I think better things can be done with that card slot and the six mana

These cards can also be useful to get your characters healthy again if you decide to use Four Dozen Eggs to defend the board