Bael'og, the Cold Flame

Other skeletons and spirits you control get +1/+1 for each soul counter on the field.

On the Block - At the beginning of combat on your turn, choose up to one that wasn't chosen last turn.
• Belog must be blocked this turn if able.
• Belog cannot be blocked this turn.

Whenever you deal combat damage to a player, you may put a soul counter on up to X target permanents, where is
X the damage dealt.