Extraplanar Minion is a Feat granted by the Invocation skill. It allows you to permanently bind minions to your service.

Each time you take this feat (at the cost of 5 BP), you gain a new minion, whose rank does not exceed your Invocation rank. Minions always have half your current BP total.

Summoning a minion is a swift action, in short range; doing so dismisses any other Extraplanar Minions currently active. The minion must obey your commands, but that doesn't mean they can't talk back from time to time.

BP cost plan A:

• 1 BP per minion per rank, 1 stack per level
• Pro: limits minions to half your BP
• Problem: too easy to get a simple minion (1 BP? rly?)

BP cost plan B:

• 5 BP per minion, automatically keeps up with level
• Costs the same in the long run as you committed to a minion (which any serious warlock would), but higher barrier to entry for casuals

Trina's costs:

• Plan A, 3 minions @ 25 BP each: 15 BP
• Plan B, 3 minions @ 25 BP each: 15 BP
• yay!