理由
Rammus is a structural hard counter to Rengar because he punishes your exact plan: commit, burst, reset. He can absorb your entry, taunt you at the moment you want to DPS, and reflect/punish your burst through defensive tools. When your engage is a forced all-in, Rammus makes you pay for it.
レーン戦への影響
In jungle, he’s annoying around objectives: if you look for a backline pick, he can hard stop you. In skirmishes, you can lose tempo trying to kill a too-tanky target or getting controlled before finishing.
立ち回り方
Don’t try to kill Rammus—play info and angles. Wait for his position/taunt to show, then pick elsewhere (side, isolated support). In teamfights, if Rammus is present, your job often becomes late flank: enter after taunt is used, not as first wave.