His +1 is a nice way to buff up your board and make it difficult for your opponent to block your creatures
If the target creature is an illegal target as Y'shtola Rhul's ability tries to resolve, it won't resolve and none of its effects will happen
In the case where the target creature is copying something else when Echoing Assault's second ability resolves, then the token enters as whatever that creature copied, except it's a 1/1
I dont like the second ability because a 2/3 with no evasion is far from guaranteed to connect
TypeEnchantment Creature Saga Dragon Collector Number356 Raritymythic ArtistKota Nakatsubo (As this Saga enters and after your draw step, add a lore counter
Caves of Chaos Adventurer takes the initiative when it enters the battlefield, and with trample, it can easily take it back should your opponent deal damage to you