Any card that is banned in Legacy should rarely be considered safe for Modern, and especially so when the combination that got it banned in the first place exists in its unfettered form
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.) Use the power of the Wraiths as the triggered ability resolves to determine the value of X
Boromir, Warden of the Tower offers a layer of protection, countering all spells your opponents cast if they didn't spend mana on those spells
You get the unblockable clause right away, so its often worth a little damage before it eats a removal spell
You'll get a straightforward cash offer based on real data not a generic lowball number pulled out of thin air
On Wings of Gold was first released in the set Aetherdrift Commander, illustrated by Danny Schwartz