Its stops everything from white protection to green regeneration
If its not any of those things, then Spite // Malice is universally able to handle it
Not only will it give a good buffer but it gives you more options in how you play, throw it down early and just fight the tempo directly or bait them into over extending by holding back the Finks
Galadriel, Gift-Giver Galadriel, Gift-Givers multiple modes not only give you versatility in a given game but also create a lot of options for deckbuilding
Old Gnawbone is a seven mana 7/7 with flying
Finally, while ideally you aren't going particularly wide in a Voltron deck, you will still typically have a decent number of backup threats and utility creatures, and passing out a bug buff to the whole team is great