Declare blockers step

The declare blockers step is a step of the combat phase, where attacking creatures may be blocked.

Creatures assigned in this step are blocking.

Blocking extra creatures
By default, each blocking creature can only block one attacking creature. Some creatures have a mechanic that allows them to block extra creatures (This creature can block an additional N creatures each combat.). This mechanic is primary in white and green.

Can't be blocked
Can't be blocked (AKA Unblockable) is primary in blue.

Can’t be blocked by creatures with power 2 or less
This ability, nicknamed Daunt, appears irregularly green.

Can't block
The "Can't block" drawback is primary in black and secondary in red.

Deals damage when blocked
This effect is done primarily in red creatures. When black does it, it is usually loss of life. Afflict also does this in blue.

Forced block
Forced block (Target creature must block this turn.) is seldom used but primary in red and secondary in green.