You decide whether to have the targeted creature block Giant Ambush Beetle this turn if able at the time the "enters" ability resolves, not at the time Giant Ambush Beetle attacks.
2009-05-01
wotc
Tapped creatures, creatures that can't block as the result of an effect, creatures with unpaid costs to block (such as those from War Cadence), and creatures that aren't controlled by the defending player are exempt from effects that would require them to block. Such creatures can be targeted by Giant Ambush Beetle's ability, but the requirement to block does nothing.
2009-05-01
wotc
If you choose to have the targeted creature block but that creature isn't able to block Giant Ambush Beetle (for example, because the targeted creature can block only creatures with flying), the requirement to block does nothing. The targeted creature is free to block whichever creature its controller chooses, or block no creatures at all.
2009-05-01
wotc
Deciding to have the targeted creature block doesn't force you to attack with Giant Ambush Beetle that turn. If Giant Ambush Beetle doesn't attack, the targeted creature is free to block whichever creature its controller chooses, or block no creatures at all.
Format Legality
Standard
Not Legal
Future
Not Legal
Historic
Not Legal
Timeless
Not Legal
Gladiator
Not Legal
Pioneer
Not Legal
Modern
Legal
Legacy
Legal
Pauper
Not Legal
Vintage
Legal
Penny
Legal
Commander
Legal
Oathbreaker
Legal
Standardbrawl
Not Legal
Brawl
Not Legal
Alchemy
Not Legal
Paupercommander
Not Legal
Duel
Legal
Oldschool
Not Legal
Premodern
Not Legal
Predh
Legal
Who's Online
Live site activity across collectors, guests, and crawlers.