If you run spells in your 99 that can reanimate creatures, you can cheat out big creatures
Whats nice about Tymna in this deck is that youre likely to be drawing plenty of further cards given youre likely to be swinging with unblockable creatures a good amount of the time
This is especially true if you're looking for cards that are ONLY useful as defensive stop-gaps
That said, Umbreon and Karen shine brightly in both arts, so you can't go wrong
Voltron strategies often rely on hexproof or indestructible creatures to ward off interaction, and they use equipment, auras, and/or +1/+1 counters to enhance that threat
Then, when Evereth dies, you can pay two mana, one of which has to be red of black, to deal damage to each opponent equal to its power