If the following card existed in Magic: The Gathering, what cards would exist alongside it, and how would you play around it? (Sprite Sheet Map Swipe)

[HQCardmaker]

Custom-Cost-And-Ignorance Immunity
(Ignores cards that mention both "{x}"
and "Ignore" in any language except for this
and the following instructions.)
Your opponent reveals
from their hand a Creature that does not mention
"Ignore", "Ignorance" nor "{x}" in any tounge and
does not activate in response. If they cannot, they
reveal from their hand a card of their choice,
drawing from their deck in response if their hand
is empty. Nice minion you're making. Let me see!