Both these cards are incredibly mana-efficient proliferate engines in our deck and any game where we can keep one of these on the battlefield is a very favorable game for us indeed
That alone is decent value, but splice onto instant or sorcery lets you sneak this effect onto all kinds of spells mid-combat or at end step
So it's important to check other aspects of the card, such as printing, materials, and artwork
Realms and Relics Box Toppers This set has a selection of 30 lands and artifacts that are all desired reprints, going from important lands like Urborg, Tomb of Yawgmoth, Karakas, and Cavern of Souls to staple artifacts like The Great Henge, Shadowspear, and Ensnaring Bridge
(For example, auto-yielding one Hellrider does not affect another copy of Hellrider.) Per Ability (Each Match) decisions apply to every copy of the ability and persist across games within the current match, then clear when you start a new match
Them : Can't you make it matter