Once per turn, when your opponent activates a Spell/Trap Card or effect (Quick Effect): You can reduce this card's Level by 2, and if you do, negate the activation, and if you do that, destroy that card
Perhaps well even see Legacy Eldrazi with [casthaven]Eye of Ugin[/casthaven], [casthaven]Eldrazi Temple[/casthaven], [casthaven]Ancient Tomb[/casthaven], and [casthaven]City of Traitors[/casthaven]
If it does, apply its DEF for damage calculation
I will admit, it is slightly overwhelming looking through the 1,600+ unique familiars in Magic to try and find the best build, but sometimes it's nice to have a deck-building project that lasts for a while
While most Aura cards are generally used to buff your own creatures, there are auras you want to attach to opposing ones
We dont need all Merfolk, but we do need some