Cull and Maim in the same activation

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Question: A card reads "Deal damage, Maim N, Cull". Does the Cull see the Maim it just applied?
Answer: Yes. The Maim is applied first and the Cull tests against the increased pool.

900.1aAuthored Maim and authored Cull are both post-damage effects, and post-damage effects resolve in the order the card lists them. Every printed card that carries both lists Maim before Cull, so the Maim lands first.
900.1bBy the time Cull evaluates, the activation's base damage has already been dealt: Armor, Shield, Vitality loss, death, and every damage trigger have fully resolved. Cull therefore reads the target's post-damage Vitality, not the value it had at the start of the activation.
900.1cCull succeeds only while Maim points are strictly greater than current Vitality. Both halves of that comparison have already moved this activation: Vitality is lower because of the hit, and Maim is higher because of the rider.
900.1dCull does not consume the Maim it checked, so a second Cull in the same activation — from a chained on-Culled trigger, for example — tests against the same pool.

Worked example

Executioner Crab, tier 3, activates against a target with 120 Vitality, 0 Armor, no Shield, and 90 Maim.
Base damage of 40 resolves first, leaving the target at 80 Vitality.
The post-damage Maim rider adds 27 (9 x tier), taking the pool to 117.
Cull then compares 117 Maim against 80 Vitality. 117 > 80, so the target is destroyed.
Had Cull been checked before the Maim rider, 90 against 80 would also have succeeded — but against a 200-Vitality target only the post-rider comparison succeeds.